Trello for Slack - Organize anything with anyone, inside Slack
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Actions from Slack - Turn Slack messages into tickets, issues, tasks, and more.
Toby for Teams - Better bookmarks, now with collaboration baked in 🔖
Slack Jira Integration - Easily keep issues moving right from Slack
Planyway - Visual project management for Jira and Trello: manage resources, build project roadmaps, use time tracking.