Koncentro is a free, open-source productivity application that combines Pomodoro timers, task management, and website blocking. It helps users organize their work into focused sessions and reduce online distractions. The software supports timeboxing, allowing users to allocate a fixed duration to individual tasks. Its website blocker can restrict distracting websites through customizable blocklists or allowlists. Users can create separate workspaces with independent task lists, timer settings, and blocking rules. The application features a modern interface inspired by Microsoft's Fluent Design, including Mica effects on Windows 11. Built with Python and PySide6, Koncentro is available for Windows, macOS, and Linux without requiring Electron.

Features

  • Pomodoro timer with customizable focus sessions and break intervals
  • Task management with timeboxing for completing activities within scheduled durations
  • Integrated website blocking with configurable allowlists and blocklists
  • Independent workspaces with separate tasks, timers, and website restrictions
  • Fluent Design interface with Windows 11 Mica visual effects
  • Cross-platform desktop application built with Python and PySide6

Project Samples

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

Python

Related Categories

Python Task Managers, Python Countdown Timers

Registered

2026-11-04