KeePass - KeePass is an open source password manager. Passwords can be stored in highly-encrypted databases, which can be unlocked with one master password or key file.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Flock Trips - Bachelor parties planned, organized, and squared away
Lurchr - Saves all your Slack links, so you can focus on work
Heymarket for Slack - Text and Facebook messaging from Slack
Slack It - A bookmarklet to share links in Slack with one click