Kumospace alternatives: 5 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
Four concurrent people get an always-on spatial office, chat and unlimited calls.
licenseproprietary, free
runstheir cloud
installHosted signup in the browser, with optional native desktop and mobile apps
enginesBuilt-in transcription and AI meeting summaries; the provider and model are not disclosed in public first-party documentation
dataAccount, 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
setup✓ installs clean
the catch vs KumospaceThe four-person concurrent cap and lighter office customization, administration, chat and integrations make it a smaller team workspace than Kumospace.
facts verified 2026-08-11
Five people, unlimited sessions and custom rooms; enough office for a genuinely small team.
licenseproprietary, free
runstheir cloud
installHosted browser signup; guests join by link
dataAccounts, 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
setup✓ installs clean
the catch vs KumospaceIts five-person cap and simpler office management, chat integrations and whiteboard or document workflow are the main step down.
facts verified 2026-08-11
The actual product is free for five registered members, with customizable rooms and basic chat intact.
licenseproprietary, free
runstheir cloud
installHosted signup in a browser; desktop and mobile apps are optional
dataRooms, chat and files live in Kumospace's cloud; audio and video is relayed through Daily or Agora and is not persistently recorded by Kumospace
setup✓ installs clean
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.
facts verified 2026-08-11
Twelve people fit, but only for two hours a day; permanent free does not mean permanently open.
licenseproprietary, free
runstheir cloud
installHosted browser signup; guests join by link
dataSpaces, uploaded files and account data live in SpatialChat's hosted service; calls occur in the browser
setup✓ installs clean
the catch vs KumospaceThe two-hour daily limit is a deal-breaker for an always-on team office.
facts verified 2026-08-11
A pixel office for ten simultaneous people; less boardroom, more tiny RPG.
licenseproprietary, free
runsyour machine or their cloud
installCreate a hosted space in the browser, or self-host with Docker Compose or the Helm and Kubernetes stack
enginesCalls can use Jitsi or LiveKit; optional virtual-agent bots can connect to OpenAI or Azure OpenAI
dataHosted 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
the catch vs KumospaceIts pixel-world aesthetic and Tiled-based map editing are less boardroom-friendly and harder for nontechnical office admins than Kumospace.
setupHosted use is clean; self-hosting needs Docker or Helm, domain/TLS, TURN and conferencing services, and serious map customization often starts in Tiled
facts verified 2026-08-11
last updated 2026-08-11 · no votes, no pay-to-list · just what's real
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Cosmos Free | proprietary, free | they host it | web, macos, windows, ios, android | — | — |
| flat.social Free | proprietary, free | they host it | web | — | — |
| Kumospace Free | proprietary, free | they host it | web, macos, windows, ios, android | — | — |
| SpatialChat Free | proprietary, free | they host it | web | — | — |
| WorkAdventure Free | proprietary, free | they host it | web | — | — |
People still pay for Kumospace because community software is valuable when members are already there and the operator does not have to own realtime reliability and abuse response. The recurring cost buys realtime delivery, notifications, abuse handling, search, media, permissions, mobile clients, backups, and community operations, not just the visible interface. If none of that applies to you, any pick above saves $192 a year.
Is there a free alternative to Kumospace?
Yes: Cosmos Free, flat.social Free, Kumospace Free and 2 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own Kumospace?
Our verdict is NO TANTO. 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. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/kumospace.
