Replace / Klaxoon
Best free Klaxoon alternatives (open source, self-hosted) 2026
The best open-source alternative to Klaxoon is Excalidraw or tldraw, self-hosted on Railway. A whiteboard you host. Excalidraw is MIT; tldraw is the source-available canvas SDK. Miro, Whimsical, Mural, and Lucidspark without the member meter.
Estimated save $1,920 a year.
Open the stackStart on Railway
How Klaxoon compares
| Klaxoon | Excalidraw / tldraw | |
|---|---|---|
| Pricing model | Hosted subscription | Open-source or fair-code license; you pay the host |
| Hosting | Vendor cloud | Self-hosted on Railway or any VPS |
| Rough monthly cost | Public list price not verified this run | Hosting only — no SaaS seat meter in this repo |
- Excalidraw
MIT virtual whiteboard for hand-drawn diagrams
- tldraw
Infinite-canvas SDK (tldraw license; not a drop-in Miro clone)
FAQ
- What is the best free open-source Klaxoon alternative?
- The best open-source alternative to Klaxoon is Excalidraw or tldraw, self-hosted on Railway. A whiteboard you host. Excalidraw is MIT; tldraw is the source-available canvas SDK. Miro, Whimsical, Mural, and Lucidspark without the member meter.
- Is it free?
- The Excalidraw / tldraw licenses are open source or fair-code. You still pay hosting (Railway or any VPS) and any APIs the stack calls. There is no Klaxoon seat or task bill on this path.
- Can I migrate from Klaxoon?
- Yes. Start with the workflows or data you actually use, then cut over. The Excalidraw / tldraw stack page has the agent prompt and the cost table; most teams rebuild the slice that matters and leave old Klaxoon links until they expire.
- How do I deploy it?
- Open the Excalidraw / tldraw stack, copy the agent prompt, and deploy on Railway (one service, PORT, and a volume when the app needs disk). Placeholder: Excalidraw plus a storage backend (or the official room server) with a volume. tldraw is an SDK — only deploy it if you are embedding a canvas, not as a Miro clone on day one.
- What does this replace?
- Miro / Whimsical / Mural / FigJam / Klaxoon / Lucidspark. The published small-team estimate on this stack is $1,920 a year.
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