Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
Gitify - GitHub Notifications on your desktop.
Freeplane - Freeplane is a powerful and free software for building mind maps.
Meteorite - Smarter GitHub notifications.
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
Octobox - Untangle your GitHub Notifications