Open source focus

Open Source Alternatives to Horizon Worlds

6 open source Spatial Computing & XR options similar to Horizon Worlds, 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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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
Mastodon
Not rated
A decentralized, open-source social media platform and alternative to larger apps like X and Threads.
Open source · Self-hostable
Heroic Labs
Not rated
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
Lemmy
Not rated
A decentralized, open-source social link aggregator and discussion platform for communities.
Open source · Self-hostable
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
Sales & Dungeons
Not rated
Turn every thermal printer into a TTRPG companion machine!
Open source · Self-hostable

Company	License	Founded	Rating	Reviews
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	-
MastodonA decentralized, open-source social media platform and alternative to larger apps like X and Threads.	Open source · Self-hostable	-	Not rated	-
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Open source · Self-hostable	-	Not rated	-
LemmyA decentralized, open-source social link aggregator and discussion platform for communities.	Open source · Self-hostable	-	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	-
Sales & DungeonsTurn every thermal printer into a TTRPG companion machine!	Open source · Self-hostable	-	Not rated	-