Trello for Slack - Organize anything with anyone, inside Slack
Huminos - Free OKR and Growth acceleration platform for Startups
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Workbot for Slack - Work your apps from Slack
Halp - Slack-first ticketing for internal helpdesk
Kyber for Slack - All-in-one Slack app: tasks, standups, polls, surveys & more