Open source focus

Open Source Alternatives to Mercury Systems

13 open source Defense Tech options similar to Mercury Systems, 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.

View all alternatives to Mercury Systems →

Arduino
Not rated
Open-source hardware and software company providing microcontrollers and kits for digital devices.
Open source · Self-hostable
Defcon
Not rated
The Defcon badges feature a unique open-source chip that doubles as a security key.
Open source
CL
Clawdmeter
Not rated
Tiny desktop dashboard for Claude Code usage stats.
Open source · Self-hostable
Mozilla Firefox
Not rated
Open-source web browser focused on privacy, user control, and an open internet.
Open source · Self-hostable
Nextcloud
Not rated
Open-source, self-hosted file sync and share and collaboration platform.
Open source · Self-hostable
Pollen Robotics
Not rated
Pioneering accessible, open-source physical robots and AI-powered application development.
Open source · Self-hostable
United Manufacturing Hub Systems
Not rated
An open-source data platform for manufacturers to access and structure machine data.
Open source · Self-hostable
Apache HTTP Server
Not rated
A free, open-source, cross-platform web server software managed by the Apache Software Foundation.
Open source · Self-hostable
SQLite
Not rated
A self-contained, file-based SQL database engine widely used in embedded systems.
Open source · Self-hostable
EU
Euro-Office
Not rated
A sovereign, open-source office suite for European enterprises and public administrations.
Open source · Self-hostable
EU
Eurostack
Not rated
A European enterprise contributing to the development of sovereign digital infrastructure.
Open source · Self-hostable
XWiki
Not rated
Open-source enterprise wiki and collaboration software.
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
ArduinoOpen-source hardware and software company providing microcontrollers and kits for digital devices.	Open source · Self-hostable	-	Not rated	-
DefconThe Defcon badges feature a unique open-source chip that doubles as a security key.	Open source	-	Not rated	-
CLClawdmeterTiny desktop dashboard for Claude Code usage stats.	Open source · Self-hostable	-	Not rated	-
Mozilla FirefoxOpen-source web browser focused on privacy, user control, and an open internet.	Open source · Self-hostable	-	Not rated	-
NextcloudOpen-source, self-hosted file sync and share and collaboration platform.	Open source · Self-hostable	-	Not rated	-
Pollen RoboticsPioneering accessible, open-source physical robots and AI-powered application development.	Open source · Self-hostable	-	Not rated	-
United Manufacturing Hub SystemsAn open-source data platform for manufacturers to access and structure machine data.	Open source · Self-hostable	-	Not rated	-
Apache HTTP ServerA free, open-source, cross-platform web server software managed by the Apache Software Foundation.	Open source · Self-hostable	-	Not rated	-
SQLiteA self-contained, file-based SQL database engine widely used in embedded systems.	Open source · Self-hostable	-	Not rated	-
EUEuro-OfficeA sovereign, open-source office suite for European enterprises and public administrations.	Open source · Self-hostable	-	Not rated	-
EUEurostackA European enterprise contributing to the development of sovereign digital infrastructure.	Open source · Self-hostable	-	Not rated	-
XWikiOpen-source enterprise wiki and collaboration software.	Open source · Self-hostable	-	Not rated	-
Sales & DungeonsTurn every thermal printer into a TTRPG companion machine!	Open source · Self-hostable	-	Not rated	-