React Native Desktop - Build OS X desktop apps using React Native
KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Arbiter IDE - The offline-friendly, in-browser IDE for pure JS prototypes
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.
CodeOnline - A remote and secure workspace powered by VSCode
Kantree - Kantree is an adaptable and intuitive project manager for the enterprise.