Priya had been a product designer for seven years when her company's design team expanded from three people to eleven. For the first six of those years, the stack was simple: Sketch on everyone's MacBook, Zeplin for developer handoff, InVision for prototypes. The workflows were established, the files were fast, and everyone knew where everything lived. When the company hired a new VP of Product who came from a company that standardized on Figma, the migration felt reasonable. Real-time collaboration, browser-based access, one tool instead of three. The pitch made sense.
Eighteen months later, the design files were enormous. The product design system alone had accumulated over four hundred components across nine pages. Opening it took nearly a minute on the machines in the Berlin office, which had slower connections than the San Francisco headquarters. The junior designers complained that the file crashed when they zoomed out on the full component library. During a product crunch the week before a major launch, two senior designers needed to work simultaneously in the same file at two in the morning from different cities, and the file became unresponsive for both of them. Priya submitted a support ticket and received a response recommending she break the file into smaller pieces. The design system that had been built over eighteen months of work needed to be restructured.
The deeper frustration was cost. The team had grown to eleven designers, all on the Organization plan at $45 per editor per month. That was $4,950 per month -- nearly sixty thousand dollars per year -- for design tooling. When Priya raised this in a budget review, the product VP noted that the previous stack of Sketch plus Zeplin plus InVision had cost less than a fifth of that. The collaboration features were real and valuable, but at eleven people they were paying a significant premium for them.
"Figma solved real problems that the previous generation of tools created. It also introduced costs, both financial and technical, that only become visible at scale."
Why People Look for Figma Alternatives
Figma's dominance in UI/UX design tooling is real and well-deserved. The reasons teams look for alternatives are specific, not general, and largely fall into a few categories.
Cost at team scale is the most common trigger. The Starter plan is free for up to two editors and three projects, which covers individual designers and very small teams. The Professional plan is $15 per editor per month. The Organization plan, which adds design systems, shared libraries with branching, single sign-on, and advanced admin controls, is $45 per editor per month. A design team of twelve on the Organization plan spends over $64,000 per year on the design tool alone. This is not a hypothetical concern -- it is a real line item in software budgets that grows directly with team size and frequently triggers evaluation of alternatives at scale.
Performance degrades on large files. Figma is browser-based. Large files -- extensive design systems, complex prototypes, files that have accumulated years of iterative work -- load slowly and can lag during editing. The browser tab competes with other browser resources. Design systems with hundreds of components, component properties, and multiple pages of screens push the file size into territory where the web-based architecture shows its limits. Desktop-native tools running the same operations have a performance advantage that becomes meaningful in daily work.
The browser dependency creates offline risk. Figma's desktop app exists but is not a fully offline tool. Features require connectivity. Designers who travel, work on planes, or operate in locations with unreliable internet access cannot depend on full Figma functionality. Several alternatives offer genuine offline operation, which matters for a meaningful segment of professional design workflows.
The Adobe acquisition attempt raised platform independence concerns. Adobe's $20 billion acquisition bid for Figma, blocked by regulators in late 2023, reminded the design community that Figma is a company with investors and acquisition value rather than a neutral utility. The outcome was ultimately favorable for independence, but the episode is not forgotten. Teams making long-term bets on a tool that defines their entire production workflow reasonably consider platform independence as a factor.
Figma can be overkill for simple needs. For a freelance designer producing wireframes for a small client, or a developer mocking up a quick interface flow, Figma's full feature set -- collaborative infrastructure, component systems, design tokens, branching, advanced prototyping, developer mode -- is more than necessary. Simpler tools handle simpler needs more efficiently.
Sketch
Sketch is the tool that defined modern UI design before Figma existed, and it remains a capable, well-maintained application that suits specific teams well.
Features: Vector design on an infinite canvas with artboards, symbols (Sketch's component system), shared libraries for team-wide design systems, prototyping with linking and transitions, Sketch Cloud for file sharing and collaboration, developer handoff via Sketch Cloud inspect view or Zeplin integration, and a plugin ecosystem covering most workflow automation needs. As a macOS native application, it runs at native application speed with direct access to system resources.
Pricing: $9 per editor per month (annual billing), which includes Sketch for Mac and Sketch Cloud access. A standard license is available for $99 one-time for a specific version without updates. The team pricing is significantly cheaper than Figma's Professional or Organization plans.
Pros vs Figma: Native macOS application with no browser overhead -- large files open and scroll faster on equivalent hardware. Fully offline capable. Long-established plugin ecosystem with mature tools for design workflow automation. At $9/month per editor, roughly half the cost of Figma Professional and one-fifth the cost of Figma Organization. No vendor lock-in risk from a large company acquisition attempt.
Cons vs Figma: Mac-only -- a mixed Windows/Mac team cannot standardize on Sketch. Collaboration is not real-time in the way Figma enables -- multiple simultaneous editors do not see each other's cursors and edits live in the same file. Cross-platform access for stakeholders is limited compared to Figma's browser-based sharing.
Best for: Mac-only design teams that prioritize native application performance, established plugin workflows, and a lower per-editor cost over real-time collaborative editing.
Adobe XD
Adobe XD shipped as Adobe's response to Sketch and Figma and is included in Creative Cloud subscriptions. For organizations already paying for Creative Cloud, it is effectively zero additional cost.
Features: Vector design with artboards, components, repeat grids for repeating UI patterns like lists and card layouts, responsive resize, prototype linking with transitions and overlays, voice prototyping for smart device interfaces, co-editing for real-time collaboration, share for review links, developer handoff with specs, and integration with Adobe Photoshop, Illustrator, After Effects, and Fonts. Available as a desktop application for Mac and Windows.
Pricing: Included in Adobe Creative Cloud All Apps ($59.99/month). Available as a standalone plan at $9.99/month for individuals. Free plan available with limited features and file storage.
Pros vs Figma: Zero marginal cost for Creative Cloud subscribers. Desktop application performance advantage over Figma's browser-based architecture for large files. Windows and Mac native applications with offline capability. Deep integration with Photoshop and Illustrator means assets from those tools move into XD with minimal friction. Strong developer handoff via XD's specs panel.
Cons vs Figma: Adobe has publicly deprioritized XD development following the failed Figma acquisition. Feature velocity has slowed and the product roadmap is less clear than it was when the acquisition was anticipated. Figma's component system, auto-layout, and design token features are more advanced. The plugin ecosystem is smaller than Figma's and growing slowly. Teams should factor the uncertain product trajectory into a long-term tooling decision.
Best for: Adobe Creative Cloud subscribers who design primarily within the Adobe ecosystem and need a capable UI design tool without additional licensing costs, particularly for Windows-based teams.
Framer
Framer has repositioned from a prototyping tool into a design-and-publish platform where designs are React components that can be published directly to production URLs.
Features: Design canvas where components are actual React code, meaning the prototype and the production site can be the same artifact. Code override system allows injecting custom TypeScript or JavaScript behavior into visual components. Built-in CMS for content-driven sites. Publish directly from Framer to a live URL on Framer's hosting infrastructure. Component library with pre-built interactive elements including carousels, tabs, accordions, and forms. AI features for generating component code from prompts. Real-time collaboration. Design tokens, variables, and responsive breakpoint controls.
Pricing: Free plan (2 projects, Framer subdomain). Mini plan $5/month. Basic plan $15/month (custom domain, advanced CMS). Pro plan $30/month (team features, advanced publishing, priority support). Team pricing varies by number of editors.
Pros vs Figma: The gap between design and production is fundamentally narrower in Framer -- a designer can ship a component without involving a developer to re-implement it. For teams building marketing sites, landing pages, or component libraries that map directly to React, this is a meaningful workflow acceleration. Output is production-quality code, not a mockup of what the code should look like. Growing fast with strong community momentum.
Cons vs Figma: Not a general-purpose UI design tool for native mobile applications -- Framer's model fits web and React environments naturally but requires adaptation for iOS or Android design work. The code-oriented model has a steeper learning curve for designers who are not comfortable with component-based thinking. The published output is Framer's infrastructure, so complex custom back-end integrations require additional development.
Best for: Designers and design-engineering teams working on web products who want to reduce the handoff gap between design and production, particularly for marketing sites, landing pages, and design systems.
Penpot
Penpot is an open-source design and prototyping tool that runs in the browser and can be self-hosted, providing a Figma-comparable feature set without licensing fees or proprietary format lock-in.
Features: Design canvas with frames, shapes, paths, and text. Component system with main components and instances. Auto-layout for responsive component behavior. Prototyping with screen-to-screen links, transitions, and overlays. Real-time collaborative editing with multiple simultaneous users. Design tokens via open standards. SVG-based file format -- every Penpot file is valid SVG internally, meaning exports are portable to any tool that reads SVG. Developer inspect view with CSS properties, spacing measurements, and asset exports. Figma file import support for migrating existing design work.
Pricing: Free at penpot.app with unlimited files and collaborators. Self-hosted via Docker at no software cost. Enterprise plans available for organizations requiring SLAs and priority support.
Pros vs Figma: Completely free for the feature set that covers most professional design workflows. Self-hosted option provides data sovereignty -- files live on infrastructure you control with no third-party cloud dependency. Open-source licensing means the project cannot be closed, sold, or have pricing changed without community alternatives. SVG-based format avoids proprietary lock-in. No per-editor pricing means large teams have no scaling cost.
Cons vs Figma: Plugin ecosystem is significantly smaller than Figma's. Some Figma workflows -- particularly around component properties and complex variant systems -- work differently in Penpot and require adjustment. Performance on very large files can lag behind Figma's infrastructure. Community support rather than commercial support means slower response for critical issues (unless on an enterprise plan).
Best for: Teams with data sovereignty requirements, organizations concerned about vendor lock-in, design teams where cost at scale is a primary concern, and open-source advocates.
Lunacy
Lunacy is a free, offline-capable design application for Windows and Mac that can open Figma and Sketch files and includes built-in access to design assets.
Features: Vector design canvas with artboards, components, auto-layout, and prototyping. Offline operation with no account required for local files. Built-in library of over 200,000 icons, UI kits, illustrations, and photos directly accessible from the design panel without leaving the application. Figma file import and Sketch file import. Cloud collaboration available with a free account. AI-powered background removal, image generation, and text generation built in. Export to multiple formats including PNG, SVG, PDF, and WebP.
Pricing: Free for all design features. Cloud collaboration requires a free account. Team features available with paid plans starting at $9.99/month for team collaboration.
Pros vs Figma: Completely free for individual and offline use with no limitations on personal projects. Windows-native performance with genuine offline operation. Built-in asset library eliminates the need to maintain or source icon and illustration libraries separately. Figma file import allows teams to work with existing Figma files without maintaining a Figma subscription.
Cons vs Figma: Cloud collaboration and real-time co-editing features are less mature than Figma's. Plugin ecosystem is smaller. Less established in professional design teams, meaning fewer shared resources, tutorials, and community support.
Best for: Windows-based designers, freelancers and students who need a capable free tool, and teams that need to work with Figma files without paying Figma subscription costs.
Marvel App
Marvel is a prototyping and user testing platform that prioritizes speed of prototype creation and built-in user research tools over full design system capability.
Features: Design editor for creating screens. Prototype linking with transitions, overlays, and hotspots. User testing sessions: share a prototype and collect click data, heatmaps, session recordings, and participant feedback. Handoff view for developers with specifications and asset downloads. Whiteboard and ideation tools. Integrations with Sketch, Figma, and Adobe XD for importing screens and linking them into prototypes. Mobile app for previewing prototypes on device.
Pricing: Free plan (1 project, 2 users). Pro plan $12/month per user (unlimited projects, version history, user testing). Team plan $42/month per user (advanced features).
Pros vs Figma: User testing integration is deeper than Figma's -- Marvel provides session recording and heatmaps natively without third-party tools. Prototype linking is faster and more intuitive for designers focused specifically on clickable prototypes for research rather than production design. The free plan covers many user testing and simple prototype needs.
Cons vs Figma: Not a full design tool -- complex vector design, component systems, and design token management are not Marvel's strengths. Better positioned as a prototyping layer on top of a primary design tool than as a standalone replacement.
Best for: UX researchers and designers who run frequent usability tests and want prototype linking and user testing in an integrated workflow without managing separate tools.
Axure RP
Axure RP is the power tool for complex interactive prototypes, used primarily by UX professionals working on enterprise applications where the prototype needs to simulate complex conditional logic and data-driven behavior.
Features: Draggable, resizable UI components with conditional logic, variables, and dynamic panel states. Complex interactions with conditions: "if the user enters a value less than zero, show an error message; if the form validates, advance to the confirmation screen." Repeater widgets for simulating data-driven tables and lists. Adaptive views for responsive design. Auto-generated HTML prototypes that can be shared via Axure Cloud links or hosted on any web server. Team collaboration via Axure Cloud with version control. Direct export of prototype specifications as documentation.
Pricing: Pro plan $25/month per user. Team plan $42/month per user. Both billed annually.
Pros vs Figma: No other design tool matches Axure's capability for conditional, logic-driven prototypes. Enterprise UX teams validating complex application workflows -- multi-step checkout flows, complex data tables, administrative interfaces with many states -- can simulate behavior in Axure that would require actual code to prototype in Figma. The output HTML runs in any browser without plugins.
Cons vs Figma: Steep learning curve that is genuinely demanding -- proficiency with Axure's conditional logic system takes weeks of practice. The interface is not modern by current design tool standards. Not suitable as a visual design tool for production specs. Primarily useful for the specific use case of high-fidelity behavioral prototyping.
Best for: Senior UX designers and UX researchers in enterprise contexts who need to prototype complex application logic, multi-step flows, and conditional behavior that simpler tools cannot simulate.
Overflow
Overflow is a user flow diagram and presentation tool that sits alongside a design tool rather than replacing it, turning designs into visual flow documentation and presentation materials.
Features: Import screens from Figma, Sketch, or Adobe XD. Connect screens with flow arrows and decision points to create user flow diagrams that document application navigation. Add flow notes, decision labels, and annotations. Present flows in a dedicated presentation mode. Export flows as PDF or image files. Prototype presentation within Overflow with click-through navigation. Responsive canvas that accommodates flows of any size.
Pricing: $13/month per user (Solo). $17/month per user (Team). Annual billing discounts available.
Pros vs Figma: Overflow specializes in a specific task -- user flow documentation and presentation -- that Figma handles poorly. A Figma prototype is not a readable flow diagram; it is a clickable simulation. Overflow produces the kind of flow documentation that stakeholders, PMs, and developers can read and understand without running through a prototype. For teams that need to communicate application architecture rather than just click through it, Overflow fills a gap.
Cons vs Figma: Overflow is not a design tool and does not compete with Figma directly. It requires a separate primary design tool. The use case is narrow enough that many teams will find Figma's existing flow and prototype features adequate.
Best for: UX teams that need to document user flows and application architecture in presentation-ready diagrams for stakeholders and developers, used alongside a primary design tool.
Zeplin
Zeplin is a developer handoff tool that takes designs from Figma, Sketch, or Adobe XD and transforms them into developer-readable specifications, replacing the process of developers inspecting design files they are not trained to navigate.
Features: Import designs from Figma, Sketch, or Adobe XD. Automatically generate CSS properties, spacing measurements, color values, typography details, and asset download links from imported designs. Styleguides that document design tokens, colors, typography scales, and spacing systems. Connected components that link design components to their code implementations. Annotations for leaving notes on specific elements for developers. Integration with Jira, Slack, GitHub, and other developer workflow tools. Versioning to track design changes over time.
Pricing: Free (1 project, 2 members). Starter $6/month. Team $19/month per user.
Pros vs Figma: Figma's own developer handoff features (Dev Mode) are now available but require a paid seat or additional Dev Mode licensing. Zeplin provides a developer-specific view of designs without requiring developers to hold a full Figma license. The developer experience in Zeplin -- CSS output, measurements, asset downloads -- is more tailored to developers' needs than Figma's inspector panel.
Cons vs Figma: Another subscription on top of the design tool subscription. Figma's Dev Mode, Sketch's Inspect view, and Adobe XD's specs panel have closed much of the gap that made Zeplin essential in 2018. Teams evaluating their tool stack should test whether their design tool's native handoff features now meet their needs before adding Zeplin.
Best for: Teams with large developer groups who need design specifications without holding Figma editor seats, and organizations with complex design systems where developer documentation is a primary requirement.
Comparison Table
| Tool | Price | Platform | Offline | Collaboration | Best Strength |
|---|---|---|---|---|---|
| Figma | $0-45/user/mo | Web + Desktop | Limited | Excellent | Real-time co-editing |
| Sketch | $9/user/mo | Mac only | Yes | Good | Native performance |
| Adobe XD | Included in CC | Mac + Windows | Yes | Good | Adobe integration |
| Framer | $0-30/mo | Web | No | Good | Design-to-code output |
| Penpot | Free / self-host | Web | No | Good | Open-source, free |
| Lunacy | Free | Windows + Mac | Yes | Limited | Free, offline, built-in assets |
| Marvel | $0-42/user/mo | Web | No | Good | User testing integration |
| Axure RP | $25-42/user/mo | Mac + Windows | Yes | Limited | Complex interactions |
| Overflow | $13-17/user/mo | Mac + Windows | Yes | Good | User flow diagrams |
| Zeplin | $0-19/user/mo | Web + Desktop | No | Good | Developer handoff |
Who Should Switch Away from Figma
Consider an alternative if your team is paying for Figma Organization plan seats for all editors and the cost is a material budget concern -- at $45/editor/month, a team of fifteen designers pays $8,100/month, and both Sketch and Penpot deliver comparable feature sets at a fraction of that cost. Switch if your team is Mac-only and values native application performance -- large files in Sketch will open and respond faster than the equivalent in a browser tab. Switch to Penpot if data sovereignty or open-source principles drive your tooling decisions, particularly if you have compliance requirements about where design files are stored. Switch to Framer if you are designing primarily for web and want to reduce or eliminate the handoff gap between design and implementation.
Who Should Stay with Figma
Stay if your team's core workflow depends on genuine real-time simultaneous editing -- Figma's co-editing experience is the best available and no alternative matches it for teams of five or more designers working on the same files. Stay if your design system is large and heavily uses Figma's component properties, variant systems, and branching features -- migrating these to any alternative involves real cost in time and potential fidelity loss. Stay if your developers are already integrated into Figma's Dev Mode workflow and your handoff process is working. Stay if you hire designers who expect Figma as the default tool -- recruiting friction has real costs. Figma is not the right tool for every situation, but for collaborative product design teams it remains the most complete and capable tool available.
For teams evaluating their broader software tooling, related comparisons worth reading include the alternatives to Canva for design work and the alternatives to Adobe Photoshop for image editing.
Frequently Asked Questions
Why do designers look for Figma alternatives?
Figma's position as the dominant collaborative design tool is well-earned, but several concrete issues push designers and teams toward alternatives. The most significant is cost at team scale: Figma's Professional plan runs \(15 per editor per month, and the Organization plan is \)45 per editor per month, which adds up quickly for design departments with multiple contributors. A team of eight designers on the Organization plan pays \(4,320 per year for design tooling alone, before any other software costs. The failed Adobe acquisition attempt in 2022-2023 raised lasting concerns among independent designers about the long-term independence of the platform. Adobe ultimately offered \)20 billion for Figma, and regulators blocked it, but the episode reminded designers that the tool they depend on for their livelihood is a company with a market value and potential acquirer interests that may not align with user preferences. Performance on large files is a real operational issue. Figma is browser-based, which means large design files -- a full product design system with hundreds of components, multiple pages of screens, and complex prototypes -- can load slowly, lag during editing, and strain browser memory. Teams working on enterprise product design at scale frequently report performance degradation in files that have accumulated years of work. The browser dependency also creates offline reliability problems. Figma has a desktop application, but it requires an internet connection to function fully. Designers working on trains, planes, or in areas with unreliable connectivity cannot rely on consistent access. For straightforward mockup work, Figma can feel like overkill: the learning curve, the pricing, and the collaborative infrastructure are all designed for professional product design teams rather than for designers who need to quickly produce a few wireframes or mockups.
What is the best free Figma alternative?
Penpot is the strongest free alternative to Figma for professional design work. It is fully open-source, licensed under the Mozilla Public License, and can be used through the hosted cloud version at penpot.app at no cost, or self-hosted on your own infrastructure. The self-hosted option is particularly valuable for organizations with data sovereignty requirements or vendor lock-in concerns. Penpot's design interface is familiar to Figma users: frames, components, auto-layout, and prototyping are all present. The file format is SVG-based, which means exports are inherently standard and not proprietary to any platform. Collaboration is real-time and multi-user, covering the core use case that made Figma compelling. The practical caveats: Penpot's plugin ecosystem is smaller than Figma's, some interactions are slower, and a few Figma workflows do not map one-to-one to Penpot's model. For the use case of professional UI design without cost, Penpot is the most credible option available. Lunacy is the second strong free option, particularly for designers on Windows. It is free to use and works fully offline with no account required. It includes a built-in library of icons, illustrations, and stock photos from the Figma community, and it can open Figma files and Sketch files directly. Lunacy is a Windows-native application with a Mac version added later, which gives it performance advantages over browser-based tools on Windows machines. Figma itself has a free Starter plan that allows unlimited personal files and three collaborative files with limited version history, which covers many individual designer use cases without cost.
What design tools work offline?
Sketch is the original offline-first professional design tool. As a macOS application, it runs entirely on your machine with no internet requirement. Files are stored locally, version history is managed through your own file system or git, and every feature works without a connection. This makes Sketch reliable in any environment and preferable for designers who work frequently without internet access. Lunacy works completely offline on both Windows and Mac, making it the best offline option for Windows-based designers. Unlike Sketch, it does not require a subscription and is free. Adobe XD as a standalone desktop application runs offline, though some cloud features (cloud documents, sharing links, coediting) require connectivity. The core design and prototyping functionality is fully local. Axure RP is desktop-based and works offline, which is part of its appeal for enterprise teams that store design files in version-controlled repositories. Figma's desktop app has limited offline capability but is not reliably functional without an internet connection -- drafts may be available but collaborative files require connectivity. For teams with strict offline requirements, Sketch on Mac or Lunacy on Windows are the most reliable choices.
What Figma alternatives are best for prototyping?
Marvel App is specifically built around prototyping and user testing. Its prototype builder is faster to use for linking screens together than Figma's prototyping panel, and its user testing features -- shareable prototype links, user testing sessions with click recording, heatmaps, and feedback collection -- are more developed than Figma's equivalent tools. For design teams that do frequent usability testing alongside prototyping, Marvel offers a more integrated workflow. Axure RP is the most powerful prototyping tool available for complex, conditional, and data-driven interactions. It supports logic, variables, dynamic panels, and conditional branching that goes far beyond what Figma, Sketch, or Adobe XD can prototype. An Axure prototype can simulate complex application behavior including multi-step form flows, table sorting, conditional content display, and animated state changes. The trade-off is that Axure is significantly more complex to use and has a steep learning curve. InVision was the dominant prototyping tool before Figma added prototyping capabilities, and while its growth has slowed, it remains a capable tool for creating clickable prototypes from design files with transitions and overlays. Framer takes a different approach: its prototyping is actually code-based React components, which means prototypes behave identically to production implementations rather than simulating production behavior.
Is Sketch still worth using over Figma?
Sketch is worth using in 2026 for specific situations, and it is not worth using in others. The strongest case for Sketch is a macOS-only design team that values the performance and reliability of a native application over browser-based collaboration, has an established Sketch plugin workflow, and does not need real-time simultaneous multi-editor collaboration. Sketch's plugin ecosystem, while smaller than Figma's, is mature and covers most design workflow needs. The handoff features with Sketch Cloud and integrations with Zeplin are reliable and developer-friendly. Sketch's pricing at $9 per editor per month is meaningfully cheaper than Figma's team plans, which matters at scale. The case against Sketch: collaboration is the fundamental limitation. Figma's real-time multi-user editing -- where two designers can literally work on the same file at the same time with live cursor visibility and simultaneous editing -- is something Sketch does not match. Sketch has collaborative features through Sketch Cloud, but it is not the same real-time experience. Cross-platform teams (Mac and Windows designers together) cannot use Sketch at all, since there is no Windows version. For product design teams that need tight real-time collaboration, are on mixed platforms, or are hiring designers who expect Figma as the standard, Sketch requires justification. For solo designers or small Mac-only teams that value native app performance and established workflows, Sketch remains a strong tool.
What open-source alternatives to Figma exist?
Penpot is the primary open-source Figma alternative and is a serious, professionally capable tool rather than a hobbyist project. Developed by the Spanish company Kaleidos, Penpot has received investment, has a full-time development team, and is actively improving. The hosted version at penpot.app is free with no usage limits. The self-hosted version can be deployed via Docker on any server with full control over data and updates. Penpot's design philosophy differs from Figma in one important way: it is built on open web standards. Components are CSS-based, exports are SVG, and the architecture does not create proprietary formats. This matters for organizations concerned about the ability to export and migrate their design work if they ever leave the platform. Inkscape is a free, open-source vector graphics tool that predates both Figma and Sketch. It is not a UI design tool in the modern sense -- it lacks components, auto-layout, and prototype linking -- but for pure vector illustration and iconography work within a design workflow, it covers the use case well. LibreOffice Draw and GIMP round out the open-source graphics toolset but are not UI design tools and are not relevant alternatives for interface design specifically.
What design tools are best for developers who need to build UIs?
Framer is the strongest tool for developers who want to design and build simultaneously. It uses React components under the surface, meaning Framer designs are actual React code. A developer can design a component in Framer and export it as production-ready JSX. The code panel in Framer allows writing custom React components that appear in the design canvas alongside visual components, which bridges the gap between design and implementation in a way no other tool achieves. The result is that a developer can produce a design in Framer and ship most of it directly without a separate handoff step. Zeplin is not a design tool itself but is the strongest developer handoff tool -- it takes designs from Figma, Sketch, or Adobe XD and generates developer-ready specifications: CSS properties, spacing measurements, color tokens, typography details, and asset exports, in a format optimized for developers reading designs rather than designers creating them. If the workflow is design-in-Figma to develop-from-specs, Zeplin makes the development side of that handoff substantially more efficient. For developers who build UIs with code and want a visual tool that produces something close to their output, Framer is the modern answer. For developers working from designs produced by others, Zeplin is the tool that makes reading and implementing those designs faster.