For a collaborative design tool that works offline without subscriptions, focus on Mockplus 3 Offline. It is purpose-built for UI/UX teams to manage files locally while maintaining prototyping features. If your work leans toward illustration, raster editing, or general graphics, tools such as Affinity Designer, GIMP, and Inkscape offer powerful offline capabilities without ongoing subscription costs.
If by “collaborative” you mean multiple people editing together, while also being offline-first and subscription-free, the options are a bit unusual because collaboration normally requires some kind of sync mechanism.
One caveat: the collaboration is peer-to-peer, so “offline collaboration” means collaborators need some way to establish a local connection; it isn't the same as several people independently editing the same file with automatic conflict merging while completely disconnected.
🥈 Penpot — best for serious team/UI design
Penpot is probably the strongest Figma alternative overall. It's open source and its self-hosted edition is free, with unlimited users, teams, and files.
The catch is that Penpot isn't a traditional offline desktop app. You'd self-host it on your own server/network. It can be deployed on-premises or even in an air-gapped environment, making it excellent for organizations that need private collaborative design.
🥉 tldraw — best for whiteboarding/diagrams
tldraw offline is a free desktop app with no account, no server, and genuine offline operation. Files are stored locally as .tldraw files.
It also gained LAN multiplayer in 2026, allowing people on the same local network to collaborate without relying on a remote server.
However, it's more of an infinite whiteboard/diagramming tool than a Figma-style UI design application.
Tool
Offline
No subscription
Real-time collaboration
Best for
OpenPencil
✅
✅
✅ P2P
Figma-style design
Penpot
⚠️ Self-hosted
✅
✅
Professional UI/product teams
tldraw
✅
✅
✅ LAN
Whiteboards & diagrams
My pick: OpenPencil if your priority is “Figma, but free, local, offline, and collaborative.”
If you tell me whether you're designing UI/UX, graphics/illustrations, presentations, or engineering diagrams, I can narrow this down to the best 2–3 options.
Penpot — Open-source Figma alternative. It can be self-hosted, so teams can collaborate without relying on a paid SaaS plan. Best for UI/UX design workflows.
OpenPencil — Desktop design editor with local files, no account requirement, and peer-to-peer collaboration features.
Varve — Local-first vector/layout/motion design app; core editing works offline and it has no subscription requirement.
Excalidraw — Great for whiteboards, diagrams, and brainstorming. Offline use is possible via its local app/PWA workflows; collaboration is less like a full design suite.
Draftila — A free, self-hosted collaborative vector design tool with real-time collaboration features.
If you need Figma-like UI design, look at Penpot/OpenPencil. If you need offline-first brainstorming, Excalidraw-style tools fit better. If you need true simultaneous collaboration while disconnected, options are more limited; self-hosted or peer-to-peer tools are the closest match.
Finding a tool that checks all three of your boxes—collaborative, works offline , and no subscription/free —is tricky because true real-time collaboration inherently relies on network communication (either a cloud server or a local network connection).
However, depending on whether you mean "collaborative by passing files/local sync" or "collaborative via a local server," a few open-source and local-first options fit your needs:
Graphite — A forever-free, open-source vector graphics and procedural design editor that operates locally. It is built as a web app that can run offline, and the project roadmap includes native multi-user live collaborative editing. It’s lightweight and great if you want a zero-cost vector tool that doesn't lock you into a cloud ecosystem.[](https://graphite.art/)
Sketch — While not free/subscription-free (it requires a paid license), Sketch does offer a true offline mode allowing you to disconnect, work locally on files, and sync changes later—though it fails the "no subscription" requirement. For a truly free desktop workflow, traditional non-real-time tools like Inkscape allow seamless offline collaboration if you share .svg files locally via a version control system like Git or a local network drive, though it lacks live co-editing.[](https://www.sketch.com/)
To help narrow down the best setup:
Do you mean real-time live collaboration (like Google Docs/Figma) with people in the same room/local network, or async collaboration (passing files back and forth)?
Are you comfortable running a local Docker container on a machine to act as a private server, or do you strictly need a stand-alone desktop app?
Here are the best options that fit these criteria:
Penpot (Self-Hosted via Local Docker)
How it works: Penpot is the leading open-source, web-based design and prototyping tool that aims to be the open alternative to Figma. While it is built for collaboration online, you can easily spin up a Penpot Docker instance locally on your own machine or a local office server.
How it works: AFFiNE is an open-source, local-first workspace that combines documents, databases, and an infinite visual canvas/whiteboard. It is built from the ground up to support local offline storage while offering collaborative capabilities when connected locally or via self-hosted sync.
How it works: If your design collaboration needs lean more toward wireframing, diagrams, and visual brainstorming, Excalidraw is an exceptional virtual whiteboard. You can run it entirely offline by self-hosting the open-source repository locally or using community Docker containers.
How it works: If you are on macOS, Sketch operates as a native desktop application with a local-first file format. It does not offer simultaneous real-time "cursor-to-cursor" multiplayer editing, but it allows you to work completely offline and push/pull changes to a shared local or workspace environment asynchronously.
Offline/Subscription status: While it traditionally uses a paid license model, it offers robust true offline design capabilities without forcing continuous cloud tethering.[](https://www.sketch.com/)
To help narrow this down, could you tell me:
What type of design work are you doing (UI/UX prototyping, vector graphics, or whiteboarding/diagrams)?
Do you have a local computer or spare server available to host a private local network instance for your team?
Free and open source: Penpot’s self-hosted Professional edition is free, with unlimited users, teams, and files.
No subscription required: You can run it on your own computer/server rather than paying for a hosted service.
Collaborative: It supports real-time team collaboration, shared libraries, components, prototyping, and design systems.
Works offline/on a local network: Self-hosting lets you keep the Penpot server and your design data under your control. Strictly speaking, internet-free collaboration requires the server and collaborators to be on the same local network; it isn't a conventional offline desktop app.
Figma alternative: Its workflow is particularly geared toward UI/UX and design-to-code collaboration.
One caveat: if by “offline” you mean two people editing the same file on separate laptops with no network connection at all, collaborative design tools generally can't do that in real time. If you tell me whether you need UI/UX, vector graphics, CAD, diagrams, or something like Photoshop, I can narrow it down to a few genuinely offline/no-subscription options.
Finding a tool that checks all three boxes—collaborative, works offline , and free with no subscription —is tricky because real-time collaboration inherently requires a network connection or a server to sync changes between people. However, depending on whether you mean "collaborative by passing files/local server" or "collaborative via an infinite whiteboard," a few open-source, zero-cost options fit your needs:
Excalidraw — A virtual collaborative whiteboarding tool with a hand-drawn look. It is open-source, free, and uses local-first browser storage, meaning it loads and lets you sketch locally even if you lose your internet connection. For collaboration, you can either use its free end-to-end encrypted room sharing when online, or self-host the collaboration backend locally so your team can collaborate over a local network without subscriptions or external data tracking.[](https://localfirstacademy.com/essays/exploring-excalidraw)
Graphite — A free, open-source 2D vector graphics and procedural design editor. It currently operates as an offline-capable web app (with native desktop wrappers in progress) and is built to be completely free. While its live multi-user collaborative editing features are still rolling out in its roadmap, it's an exceptional choice if your definition of "collaboration" leans toward local, open, node-based vector creation without vendor lock-in.[](https://graphite.art/)
To help narrow down the best setup, tell me:
Are you looking to do UI/UX vector design (like Figma/Sketch) or diagramming/whiteboarding (like Miro/Miro alternatives)?
Does "collaborative" mean multiple people editing at the exact same time , or just passing files/local hosting?
Penpot — probably the closest Figma alternative. It’s open-source, supports real-time collaboration, and can be self-hosted so you don't have to pay a recurring SaaS subscription. The self-hosted Professional edition is listed as free with unlimited users, teams, and files.
tldraw Offline — excellent if you want an infinite canvas, diagrams, wireframes, or whiteboarding rather than a full Figma-style UI-design environment. The desktop app requires no account or server, works offline, and saves portable .tldraw files. It now also has LAN multiplayer, allowing collaboration over a local network without relying on the internet.
The important distinction
If you need “everyone can edit simultaneously while the internet is completely unavailable,” I'd look at tldraw offline's LAN collaboration. If you need professional UI/UX design, components, prototypes, design systems, and developer handoff, I'd look at Penpot self-hosted—but its collaborative server needs to be accessible to the team, such as on a local/on-premise network.
If you tell me whether you're designing UI/UX, graphics, diagrams/whiteboards, or something like CAD, I can narrow it down to 2–3 genuinely suitable tools.
Finding a tool that is truly collaborative, works completely offline , and has no subscription is tricky because real-time collaboration inherently requires a network connection (or a local server setup). However, depending on whether you mean "collaborative in the same room via a local network" or "works offline locally and syncs peer-to-weight later," a few open-source and local-first projects fit parts or all of this need.
Here are the best options available:
AFFiNE
What it is: An open-source, local-first alternative combining Notion-style documents and Miro-style infinite canvas whiteboards/diagrams.
How it fits your needs: It is built with a local-first architecture. The desktop app stores everything directly on your machine so you can design, write, and plan 100% offline. It supports local network peer-to-peer sync or optional cloud sync when you choose. It is entirely free and open-source with no mandatory subscription.
What it is: The first open-source, web-based design and prototyping tool built with web standards (SVG-native), heavily serving as an open alternative to Figma.
How it fits your needs: Because it is open source, you can self-host it locally on a private server or a local machine via Docker. If your collaborators are on the same local network (like an office Wi-Fi or local router), you can collaborate in real-time completely offline without any internet connection or third-party subscription.
What it is: If strict "real-time simultaneous cursor" collaboration isn't a strict requirement, tools like Excalidraw or Penpot allow you to export and share native project files locally.
How it fits your needs: You work completely offline as a standalone desktop or local app, save the file, and pass it around (via local network, USB, or Git) to merge edits asynchronously. Zero subscriptions, zero forced cloud dependencies.[](https://www.youtube.com/watch?v=bc48trSVoz4)
To help narrow down the best setup, tell me:
Do you need real-time simultaneous editing (like Figma/Miro) or passing files back and forth?
Are your collaborators in the same physical room/local network , or working completely independently?
Free and open source: The self-hosted version is free, with unlimited users, teams, and files.
Collaborative: It supports real-time multiplayer editing, comments, shared libraries, and team collaboration.
Offline/private: You can run Penpot on your own server or local infrastructure, so your design environment doesn't depend on Penpot's cloud subscription.
Good Figma alternative: It supports UI design, prototypes, components, design tokens, CSS Grid/Flex layouts, and developer inspection.
One caveat: "offline" and "real-time collaboration" are inherently in tension. If multiple people need to edit simultaneously, they'll need access to the same local/self-hosted Penpot server (which could be on your LAN). If everyone is completely disconnected, you can work locally, but you won't get live collaboration until the environments can communicate.
If you tell me whether you're on Windows, Mac, or Linux, I can recommend the simplest setup for a completely free, offline/local collaborative workflow.
Finding a design tool that is truly collaborative, works entirely offline, and has zero subscription fees is a bit of a paradox, because "collaboration" inherently requires sharing data across devices.
However, depending on what you mean by "collaborative" (real-time multiplayer vs. peer-to-peer/local sync), a few open-source and self-hosted options fit parts or all of your criteria:
Penpot (Self-Hosted)
The Vibe: The ultimate open-source, web-based UI/UX design and prototyping tool (a true free alternative to Figma).
Offline/Subscription: It is 100% free and open-source. You can run it locally on your own machine or local server via Docker (so it requires no subscription and can operate on a local network without hitting the commercial cloud).
Collaboration: If you self-host it on a local server or home network (via Coolify or Docker), multiple people on the same local Wi-Fi/LAN can collaborate in real-time without an active internet connection to the outside world.
If you need individual offline use that syncs up later, traditional vector tools like Inkscape are completely free and offline, but lack native real-time collaboration.
If you are working with technical or markdown/vector layouts, developer-focused local-first tools (like Git-backed canvas workflows) allow peer-to-nial syncing over local networks, though they lack a slick "Figma-style" multiplayer cursor out of the box unless self-hosted.
To help narrow down the best setup for you, let me know:
Do you mean real-time multiplayer collaboration (like seeing cursors move at the same time), or just sharing/passing files back and forth?
Are you comfortable running a simple local server / Docker container on one of your machines, or do you need a traditional desktop app (.exe/.app) that connects peer-to-peer?
