Open source focus

Open Source Alternatives to Lego Group

6 open source Toys options similar to Lego Group, 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
Pollen Robotics52
RoboticsParis, France$2.6M
Pioneering accessible, open-source physical robots and AI-powered application development.
Open source · Self-hostable
Heroic Labs47
GamingLisbon, Portugal
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
Arduino46
Open SourceSomerville, United States$54.0M
Open-source hardware and software company providing microcontrollers and kits for digital devices.
Open source · Self-hostable
OWASP38
CybersecurityRaleigh, USA
A global non-profit foundation dedicated to improving software security through open community collaboration.
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
Pollen RoboticsPioneering accessible, open-source physical robots and AI-powered application development.	Robotics	Open source · Self-hostable	Paris, France	$2.6M	52
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Gaming	Open source · Self-hostable	Lisbon, Portugal	—	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
OWASPA global non-profit foundation dedicated to improving software security through open community collaboration.	Cybersecurity	Open source · Self-hostable	Raleigh, USA	—	38
Sales & DungeonsTurn every thermal printer into a TTRPG companion machine!	Gaming	Open source · Self-hostable	—	—	—