Software · Office & notes
sleek
Todo manager based on the todo.txt syntax for Linux, free and open-source (FOSS).
- Completely free
- Windows, macOS and Linux
- Open source
- No account
Overview
sleek is a task management program, available on Windows, macOS and Linux.
Features described in its Flathub listing and in its GitHub repository: full-text search.
Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.
Excerpts that establish this information
- “todo.txt manager for Linux, Windows and Mac, free and open-source (FOSS)” — GitHub, 10 November 2026
- “Creating todos is straightforward, and tag-based filtering in tandem with highly customisable grouping and smart full-text search allows for rapid information retrieval.” — GitHub, 10 November 2026
- “Inline autocomplete available for adding contexts and projects” — Flathub, 10 November 2026
- “Due dates, threshold dates, recurrences, pomodoros and priorities can be selected by built-in picker elements” — Flathub, 10 November 2026
- “Navigable via keyboard shortcuts” — Flathub, 10 November 2026
At a glance
All of sleek is free: no feature is locked behind a paid plan, and its code is open.
Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.
Strengths
- Open source code
- No account needed
- Commercial use allowed
About
sleek is an open-source (FOSS) todo manager based on the todo.txt syntax. Stripped down to only the most necessary features, and with a clean and simple interface, sleek aims to help you focus on getting things done. All classic todo.txt attributes are supported and enhanced by additional features. Creating todos is straightforward, and tag-based filtering in tandem with highly customisable grouping and smart full-text search allows for rapid information retrieval. Completed todos can be hidden or archived into separate done.txt files. Easy integration with other todo.txt apps is facilitated by continuously scanning todo.txt files for changes. sleek is available for Windows, macOS and Linux, and in several languages. Features Uses existing todo.txt files or creates new ones File watcher scans todo.txt files for changes Simultaneously manage multiple todo.txt files Add and search for todos by priority, contexts, projects, due date, creation date, completion date, recurrence (repeating todo), threshold dates (deferred todos), pomodoro intervals Filter, sort, and group todos by all available attributes Invert the sorting of each group Find todos using a sophisticated advanced search based on the todo.txt syntax Inline autocomplete available for adding contexts and projects Multi-line and bulk todo creation Due dates, threshold dates, recurrences, pomodoros and priorities can be selected by built-in picker elements Speaking dates can be entered for due and threshold dates Marking a recurring todo as complete, will create a new todo Navigable via keyboard shortcuts Due date notifications Toggle between dark and light mode Completed todos can be shown, hidden, and archived Language options: English, German, Italian, Spanish, French, Simplified Chinese, Brazilian Portugese, Japanese, Turkish, Hungarian, Czech, Polish, Russian, Korean, Hindi
Description from Flathub — AppStream (Flathub)
Sources and checks
- Facts collected from Flathub (credit card, publisher, licence, free status, platforms, commercial use, version) —
- Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) —
- Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) —
- Last technical check: 7 November 2026
- Description from Flathub — AppStream (Flathub)
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