Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited

Papermind - Papermind Slack App is a collaborative article-editing and document management platform for Slack

Ripcord - A desktop chat client for Discord and Slack

Slenke - Project management & team collaboration

Done Hui - No need to switch between multiple pieces of software to get through the workday. CHATS: Communicate freely. CALENDAR: Know your team's availability, plan meetings. No more conflicts. TO-DOs: Stay on top of all projects. FILES: All files, one spot.

Trainual + Slack Integration - Capture knowledge or access training right inside Slack