Invision - Prototyping and collaboration for design teams
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Atomic - The fastest way to design beautiful interactions
Trello for Slack - Organize anything with anyone, inside Slack
Pixelapse - Visual version control and collaboration workflow for open source and private design projects.
Halp - Slack-first ticketing for internal helpdesk