Clearbit for Slack - Send all signups directly to a Slack channel
Lurchr - Saves all your Slack links, so you can focus on work
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.
Slack News Feed - Get the top posts from every Slack chat you're in.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.