My firm uses a combination of tools: Basecamp (2), Trello, and Slack (internally only). We use Trello to track user stories and sprint planning, and Basecamp for outside-of-meeting communication, QA assignments to clients, client todo items, and file management (with Google Drive).<p>We get annoyed at these limitations of Trello: cant assign checklist items, can&#x27;t have discussion on checklist items.<p>We get annoyed at these limitations of Basecamp: projects quickly turn into checklist hell, cannot connect ANYTHING to it&#x27;s user story, poor calendaring.<p>We&#x27;ve looked at JIRA, but it&#x27;s just not client friendly, and we really don&#x27;t want another tool in the mix.