Open source focus

Open Source Alternatives to Valve Corporation

14 open source Gaming options similar to Valve Corporation, 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 Org53
AI Image Generation$30.0M
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
Heroic Labs47
GamingLisbon, Portugal
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
Hugging Face76
AINew York, United States$395.2M
Hugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.
Open source · Self-hostable
Elementor69
WebsiteRamat Gan, Israel$65.8M
Elementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.
Open source · Self-hostable
Backstage57
Developer ToolsStockholm, Sweden$63.0M
An open-source developer portal for building and managing software.
Open source · Self-hostable
Pollen Robotics52
RoboticsParis, France$2.6M
Pioneering accessible, open-source physical robots and AI-powered application development.
Open source · Self-hostable
Defcon47
HardwareMcLean, United States$44.0M
The Defcon badges feature a unique open-source chip that doubles as a security key.
Open source
Arduino46
Open SourceSomerville, United States$54.0M
Open-source hardware and software company providing microcontrollers and kits for digital devices.
Open source · Self-hostable
GDevelop26
Computer GamesLondon, GB
No-code game development platform empowering creators to build games without prior technical skills.
Open source
CL
Clawdmeter15
Artificial IntelligenceReykjavik, Iceland
Tiny desktop dashboard for Claude Code usage stats.
Open source · Self-hostable
RepoRank 13
Open Source
Real-time discovery platform for open source and emerging products, surfacing what's gaining traction.
Open source · Self-hostable
MCP.so10
Developer Tools
A community-driven marketplace for discovering and deploying Model Context Protocol (MCP) servers and clients.
Open source · Self-hostable
Agentic Commerce Protocol (ACP)4
AISan Francisco, United States
Open-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.
Open source · Self-hostable
Sales & Dungeons
Gaming
Turn every thermal printer into a TTRPG companion machine!
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
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.	AI Image Generation	Open source	—	$30.0M	53
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Gaming	Open source · Self-hostable	Lisbon, Portugal	—	47
Hugging FaceHugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.	AI	Open source · Self-hostable	New York, United States	$395.2M	76
ElementorElementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.	Website	Open source · Self-hostable	Ramat Gan, Israel	$65.8M	69
BackstageAn open-source developer portal for building and managing software.	Developer Tools	Open source · Self-hostable	Stockholm, Sweden	$63.0M	57
Pollen RoboticsPioneering accessible, open-source physical robots and AI-powered application development.	Robotics	Open source · Self-hostable	Paris, France	$2.6M	52
DefconThe Defcon badges feature a unique open-source chip that doubles as a security key.	Hardware	Open source	McLean, United States	$44.0M	47
ArduinoOpen-source hardware and software company providing microcontrollers and kits for digital devices.	Open Source	Open source · Self-hostable	Somerville, United States	$54.0M	46
GDevelopNo-code game development platform empowering creators to build games without prior technical skills.	Computer Games	Open source	London, GB	—	26
CLClawdmeterTiny desktop dashboard for Claude Code usage stats.	Artificial Intelligence	Open source · Self-hostable	Reykjavik, Iceland	—	15
RepoRank Real-time discovery platform for open source and emerging products, surfacing what's gaining traction.	Open Source	Open source · Self-hostable	—	—	13
MCP.soA community-driven marketplace for discovering and deploying Model Context Protocol (MCP) servers and clients.	Developer Tools	Open source · Self-hostable	—	—	10
Agentic Commerce Protocol (ACP)Open-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.	AI	Open source · Self-hostable	San Francisco, United States	—	4
Sales & DungeonsTurn every thermal printer into a TTRPG companion machine!	Gaming	Open source · Self-hostable	—	—	—