Cushion - A forecasting app for freelancers, get better insights
Nifty - Manage projects, work, and communications in one place.
Codegiant - Codegiant - Issue tracking, git repositories, continuous integration and documentation in a single platform.
UnderPinned - One app to manage your projects from start to finish.
Segro App - Stop bad habits with calendar insights. Download the Segro app as extension to your preferred calendar.
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.