Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Pusher Beams - Send push notifications programmatically at scale

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.

PushOwl - Re-engage website visitors with push notifications

Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.

Push More - Receive webhook requests in Telegram