Slack

Facilitates communication and document sharing for teams. Slack is a chat-based tool for team communication. The host sets up ‘rooms,’ or channels, that collect conversations around a certain theme. Team members can interact synchronously or asynchronously in the channels. They can also upload documents and other files that their teammates can access and comment on. Each team’s space is only accessible by people on that team, and it’s possible to create channels that are private to sub-groups of a team. …