Kumospace costs $16/mo.
These cost $0.
5 free alternatives to Kumospace, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
Kumospace vs Free Alternatives Matrix
Quick side-by-side comparison · $0/mo vs $16/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| Cosmos Free | free | proprietary, free | Hosted | ★ $0 forever | Kumospace vs Cosmos Free → |
| flat.social Free | free | proprietary, free | Hosted | ★ $0 forever | Kumospace vs flat.social Free → |
| Kumospace Free | free | proprietary, free | Hosted | ★ $0 forever | Kumospace vs Kumospace Free → |
| SpatialChat Free | free | proprietary, free | Hosted | ★ $0 forever | Kumospace vs SpatialChat Free → |
| WorkAdventure Free | free | proprietary, free | Local or hosted | ★ $0 forever | Kumospace vs WorkAdventure Free → |
The picks
5 free to use · ranked by fit
- 01
Cosmos Free
freeproprietary, freeHostedFour concurrent people get an always-on spatial office, chat and unlimited calls.
The catch vs KumospaceThe four-person concurrent cap and lighter office customization, administration, chat and integrations make it a smaller team workspace than Kumospace.
Install, platforms & data +
- platforms
- desktopmobilewebthey host it
- install
- Hosted signup in the browser, with optional native desktop and mobile apps
- engines
- Built-in transcription and AI meeting summaries; the provider and model are not disclosed in public first-party documentation
- your data
- Account, messages and files live in Cosmos's cloud; calls are transmitted encrypted, while user-started recordings are stored on Cosmos servers and some recording or message data is handled by US processors
- checked
- 2026-08-11
- 02
flat.social Free
freeproprietary, freeHostedFive people, unlimited sessions and custom rooms; enough office for a genuinely small team.
The catch vs KumospaceIts five-person cap and simpler office management, chat integrations and whiteboard or document workflow are the main step down.
Install, platforms & data +
- platforms
- webthey host it
- install
- Hosted browser signup; guests join by link
- your data
- Accounts, room definitions and shared content live in flat.social's hosted service; device and usage data is collected by the service, while live media is handled in the browser
- checked
- 2026-08-11
- 03
Kumospace Free
freeproprietary, freeHostedThe actual product is free for five registered members, with customizable rooms and basic chat intact.
The catch vs KumospaceThe free plan is the same product, but it stops at five registered members, one floor and a public space, without paid security, admin, integrations or advanced analytics.
Install, platforms & data +
- platforms
- desktopmobilewebthey host it
- install
- Hosted signup in a browser; desktop and mobile apps are optional
- your data
- Rooms, chat and files live in Kumospace's cloud; audio and video is relayed through Daily or Agora and is not persistently recorded by Kumospace
- checked
- 2026-08-11
- 04
SpatialChat Free
freeproprietary, freeHostedTwelve people fit, but only for two hours a day; permanent free does not mean permanently open.
The catch vs KumospaceThe two-hour daily limit is a deal-breaker for an always-on team office.
Install, platforms & data +
- platforms
- webthey host it
- install
- Hosted browser signup; guests join by link
- your data
- Spaces, uploaded files and account data live in SpatialChat's hosted service; calls occur in the browser
- checked
- 2026-08-11
- 05
WorkAdventure Free
freeproprietary, freeLocal or hostedA pixel office for ten simultaneous people; less boardroom, more tiny RPG.
The catch vs KumospaceIts pixel-world aesthetic and Tiled-based map editing are less boardroom-friendly and harder for nontechnical office admins than Kumospace.
Install, platforms & data +
- platforms
- webthey host it
- install
- Create a hosted space in the browser, or self-host with Docker Compose or the Helm and Kubernetes stack
- setup
- Hosted use is clean; self-hosting needs Docker or Helm, domain/TLS, TURN and conferencing services, and serious map customization often starts in Tiled
- engines
- Calls can use Jitsi or LiveKit; optional virtual-agent bots can connect to OpenAI or Azure OpenAI
- your data
- Hosted maps and account or room data live on WorkAdventure's EU service; self-hosted maps live on persistent volumes or S3-compatible storage, with original map sources kept separately by the user
- checked
- 2026-08-11
Frequently Asked Questions
Direct answers · Kumospace open-source replacements
What is the best free alternative to Kumospace?+
The top free alternative to Kumospace is Cosmos Free (free). Four concurrent people get an always-on spatial office, chat and unlimited calls. Other popular Kumospace replacements include flat.social Free, Kumospace Free, SpatialChat Free.
Can I self-host a free replacement for Kumospace?+
Yes. Of the 5 free alternatives to Kumospace, 1 can be self-hosted on your own server or local machine: WorkAdventure Free (proprietary, free).
How much does switching from Kumospace to a free alternative save?+
Kumospace starts at $16/month per seat ($192/year). Switching a 5-person team to a free alternative like Cosmos Free saves $960 per year in software subscription fees.
Should I vibe-code or build my own Kumospace clone from scratch?+
Our build verdict for Kumospace is NOT REALLY (use a free alternative, save the tokens). A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Kumospace, host a lightweight spatial room for a small team without production media guarantees. The hard boundary is real-time video infrastructure, office presence, moderation, analytics, and support, plus network, moderation, and communication infrastructure.
What is the catch when switching from Kumospace to Cosmos Free?+
The four-person concurrent cap and lighter office customization, administration, chat and integrations make it a smaller team workspace than Kumospace.
