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.
Rach.io - Smart sprinkler controller for iOS and Android
KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Seek by iNaturalist - Seek by iNaturalist is an education application that uses the power of images recognition technology to identify nature all around the world.
Meistertask - MeisterTask is an intuitive task management and collaboration tool.
hellogrow - We're passionate on making home grown produce dirt simple