Open-source alternatives to Things

Advanced todo app with timeboxing and tracking — Super Productivity is an advanced todo list app with integrated Timeboxing and time tracking capabilities. It also comes with integrations for Jira, GitLab, GitHub and Open Project.

↔ alternative to Todoist、TickTick、Things

GTD to-do app that surfaces your next action — Get every task and idea out of your head, then see the next thing to do. Getting Things Done (GTD) app for desktop and mobile.

↔ alternative to OmniFocus、Things、Todoist