Papermind - Papermind Slack App is a collaborative article-editing and document management platform for Slack
Quip: Team Documents for Slack - Create, share and get notified about Quip docs in Slack
Slenke - Project management & team collaboration
Trainual + Slack Integration - Capture knowledge or access training right inside Slack
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Coment - Online comments aggregated in one dashboard