Mindwtr

Mindwtr is a free, open-source to-do app built on the Getting Things Done (GTD) method. It captures every task and idea in seconds into an Inbox, then guides you through a clarify step and shows only the next actions you can actually act on in a Focus view. It implements the full GTD loop — capture, clarify, organize, engage, and reflect — with a guided weekly review wizard.

Mindwtr is local-first: your data lives on your device, with optional sync through iCloud on Apple devices, Dropbox, a shared folder, your own server, or WebDAV. It ships native apps for Windows, macOS, Linux, iPhone, and Android, plus a web app that works offline. Advanced features include projects with sections and areas, contexts with nested matching, Waiting For and Someday/Maybe lists, a calendar, a Kanban board, global search with operators, attachments, markdown notes, and an optional AI assistant that can use your own OpenAI, Gemini, Claude, or a self-hosted model.

Mindwtr is a modern alternative to paid task managers like Todoist and OmniFocus. It is simple by default and keeps advanced options out of the way until you need them. For developers it exposes a local REST API, a CLI, and an MCP server so AI assistants can manage your tasks. It is licensed under AGPL-3.0.