Notin - Notin – notes in notification app helps users in creating alarms to get reminders about important tasks right on the home screen.

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

Perpetual Notes - Write beautifully. Organize easily. Find everything. Fuss free writing. Saves notes as RTF files on user specified folder. Can search across all notes. No sign up/log in required. Portable application.

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

Obsidian - GraphQL caching tool for the Deno runtime environment

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