
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
PyMapper
Tiamat
Dungeon Tile Mapper
Fractal Mapper
Dungeon Scrawl
Dungeon Map Doodler
donjon.bin.sh
Campaign Cartographer
SourceForge
PyMapperGitHub - 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.
Tiamat - Tiamat is Web 2.0 Tile Mapper; Ideal for creating miniature scale maps for role playing and miniature games.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Dungeon Tile Mapper - Dungeon Tile Mapper is a web based tile mapping tool that includes many official D&D tile sets.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Fractal Mapper - With Fractal Mapper, creating worlds has never been so easy!