What about our team, we are working remotely and use (and work on) Riter: https://riter.co/. It allows to manage the whole company with all its projects, teams and customers. The main features are:
- task management and sprint planning (todos, tags, task states);
- time estimation and tracking;
- collaboration (comments, file sharing, assignment, access control);
- project statistics (time spent, activity, performance, etc.);
- groups of projects (combine several projects into temporary groups for simultaneous work).