Halna Outliner - "Halna Outliner" is an outline processor that has Two panes, one for Tree part and one...

Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.

Tree Notes - Simple, clean and light-weight notes manager. Organize all your notes in a tree structure with icons.

Slinky - Your slack links — organized!

Cardbox - Contacts reimagined as a social network ✨

Obie.ai - Access knowledge quicker without leaving Slack