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

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

ZELF - Instant money in messengers

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

MonetizeJS - Modern payment platform, no server required.