BugHerd - BugHerd: The Website Feedback Tool for Agencies
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.
Bird Eats Bug - Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
Nifty - Manage projects, work, and communications in one place.
Shake SDK - Bug and crash reporting tool for your mobile app
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.