FHEM
openHAB
Home-Assistant.io
Control4
ioBroker
Conrad Connect
Homebridge.io
pimatic
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
SourceForgeopenHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Control4 - Control4 manufactures a complete line of affordable wired and wireless smart home systems and home...
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.