Clyde is a simple menu bar app that lets you alarm your MacBook at a public place when you step away to do something like ordering coffee, providing an alternative to asking strangers to watch your device.
Use Reminded to schedule and track automated reminders for groups via email or SMS. Use it at home, at work and for business. With friends, your team and clients.
UPD' 2019: RealtimeBoard is now called Miro. Use Mind Map to visualize your thoughts. Brainstorm, plan projects, or take on more complex tasks like building story maps, roadmaps, or journey maps on the endless canvas with all the information in front of you.