Open source alternatives to Cloudflare Durable Objects

2 projects on starwire do the same job. Ranked by how much of what Cloudflare Durable Objects does each one covers, read from its README and website. Ties go to the most active.

What Cloudflare Durable Objects does

Stateful objects with strong consistencycore
Built-in storage per objectcore
WebSocket coordination
Real-time collaboration and multiplayer
Alarms and scheduled work
Global placement

Each dot in the table is one job, in this order. Square dots are core jobs and count double. Full means yes, half means partly. "See the evidence" under a project shows the line behind each one. Coverage is what a project documents, not how well it works or how hard it is to move to. How we score this

Project	Covers	Stars	Commits, 12 weeks	Last release	Closed vs opened	Setup	License
durable-actorsActor model runtime on SQLite for stateful multiplayer and agent coordination	Replaces it81%	361+21	408	4 days ago	85%	For developers	MIT
Covers all 2 core jobs. Partly: Global placement. Not shown: Alarms and scheduled work.See the evidence Stateful objects with strong consistencycoreYesconcurrent callers can update it safely Built-in storage per objectcoreYeshas its own SQLite database WebSocket coordinationYesWebSocket server included Real-time collaboration and multiplayerYescoordinate concurrent edits from several people and agents Alarms and scheduled workNot shownNeither the README nor the website mentions it. Global placementPartlyyour actors are reachable from anywhere in the world
celldSelf-hosted runtime for distributed Durable Objects-style stateful services	Replaces it81%	6.3k+57	8	24 days ago	47%	Needs a server	Apache-2.0
Covers all 2 core jobs. Partly: Real-time collaboration and multiplayer. Not shown: Global placement.See the evidence Stateful objects with strong consistencycoreYesexactly one node owns a cell at a time Built-in storage per objectcoreYesa named server with its own SQLite database WebSocket coordinationYesSQLite storage, alarms, hibernating WebSockets Real-time collaboration and multiplayerPartlycreate a distributed chat app Alarms and scheduled workYesSQLite storage, alarms, hibernating WebSockets Global placementNot shownNeither the README nor the website mentions it.

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