Open Source Android Task Managers

Mindwtr: The Privacy-First GTD System Mindwtr is a Getting Things Done (GTD) productivity tool designed for "Mind Like Water." It runs completely offline—no accounts, no tracking, and no subscriptions. The Core GTD Workflow Capture: Instantly offload thoughts to your Inbox. Clarify: Process tasks rapidly with the built-in "2-Minute Rule" timer. Organize: Sort tasks by Contexts (@work, @home), Areas, and Projects. Reflect: Keep your system trustworthy with a guided Weekly Review. Engage: Filter Next Actions by energy level or time available. Powerful Features Local-First: Your data lives on your device (SQLite). You own it 100%. Flexible Sync: Sync privately via File System (Syncthing, iCloud) or WebDAV (Nextcloud). Focus View: A unified dashboard for your calendar events and next actions. Kanban Boards: Visualize projects with drag-and-drop columns. Stop managing your data. Start getting things done.

Backlog Tracker is a free, open-source productivity application for managing unfinished work and activities that accumulate over time. It supports study assignments, work queues, games, habits, routines, and personalized task collections. Users can choose between count-based tracking for recurring workloads and one-time task tracking. Automatic growth schedules add pending items daily or on selected repeating days. These schedules can be paused when new work temporarily stops accumulating. The application estimates how long clearing a backlog will take based on a daily completion target. An accumulation predictor previews how the workload may change over time. Offline-first operation, JSON backups, and shareable templates make it practical for personal planning across Android, Windows, Linux, and macOS.

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An Android client for the Todoist online task management service.

Vixitask is simple and lightweight tasks management app. This app is created to boost your productivity by manage all your tasks on your phone. This app is Open Source, if you want to improve this app you can create pull request to Vixitask repository on github.

A free and open-source, fully customizable task manager for Android. Full-featured version on about June 2019. For contributing, see file TODO inside the repository root. TaskMan is licensed under GNU GPL version 3 or later; see LICENSE file inside the repository root. Android is a trademark of Google LLC in the United States and/or in other countries.