Open source focus

Open Source Alternatives to Rec Room

8 open source Virtual Reality options similar to Rec Room, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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Mastodon
Not rated
A decentralized, open-source social media platform and alternative to larger apps like X and Threads.
Open source · Self-hostable
Lemmy
Not rated
A decentralized, open-source social link aggregator and discussion platform for communities.
Open source · Self-hostable
Heroic Labs
Not rated
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
GDevelop
Not rated
No-code game development platform empowering creators to build games without prior technical skills.
Open source
Comfy Org
Not rated
Comfy is an AI creation engine for visual professionals, offering granular control over AI models, parameters, and outputs through a node-based workflow on an infinite canvas.
Open source
Manyverse
Not rated
Manyverse is a social network client that uses a peer-to-peer protocol, allowing users to create and share content offline and without central servers.
Open source · Self-hostable
Thunderbird
Not rated
Free and open-source email client for managing email, calendars, and contacts.
Open source · Self-hostable
Sales & Dungeons
Not rated
Turn every thermal printer into a TTRPG companion machine!
Open source · Self-hostable

Company	License	Founded	Rating	Reviews
MastodonA decentralized, open-source social media platform and alternative to larger apps like X and Threads.	Open source · Self-hostable	-	Not rated	-
LemmyA decentralized, open-source social link aggregator and discussion platform for communities.	Open source · Self-hostable	-	Not rated	-
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Open source · Self-hostable	-	Not rated	-
GDevelopNo-code game development platform empowering creators to build games without prior technical skills.	Open source	-	Not rated	-
Comfy OrgComfy is an AI creation engine for visual professionals, offering granular control over AI models, parameters, and outputs through a node-based workflow on an infinite canvas.	Open source	-	Not rated	-
ManyverseManyverse is a social network client that uses a peer-to-peer protocol, allowing users to create and share content offline and without central servers.	Open source · Self-hostable	-	Not rated	-
ThunderbirdFree and open-source email client for managing email, calendars, and contacts.	Open source · Self-hostable	-	Not rated	-
Sales & DungeonsTurn every thermal printer into a TTRPG companion machine!	Open source · Self-hostable	-	Not rated	-