Software · Internet & communication

Koncentro

Pomodoro, tasks & website blocking.

Completely free
Windows and Linux
Open source
No account

Ad-supported exit link (Clictune): an intermediate page may show for a few seconds before the official website. Direct link to the website, no intermediate page

Download from the official source

Link to the official download page, ad-supported (Clictune): an intermediate page may show for a few seconds. Direct link to the download

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub, Winget (Windows Package Manager)
License: GPL-3.0+ — Open source (copyleft)confirmed by Flathub, Winget (Windows Package Manager)
Open source: Yes
Commercial use: Yesconfirmed by Flathub, Winget (Windows Package Manager)
Account required: Noconfirmed by Winget (Windows Package Manager)
Credit card required: Noconfirmed by Flathub, Winget (Windows Package Manager)
Watermark: Not applicable
Ads: not documented
Platforms: Windows and LinuxEstablished by Linux: Flathub · Windows: Winget
Publisher: Bishwa Saha
Latest version: 1.1.0 (2 October 2025)
Latest activity: 20 June 2026
Source code: github.com/kun-codes/Koncentro

At a glance

Koncentro is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No account needed
Commercial use allowed

About

A powerful productivity app combining Pomodoro technique, task management, and a website blocker. A list of features: Timeboxing: Set fixed durations for tasks to boost focus and efficiency. Website Blocker: Block distracting sites using customizable blocklists or allowlists. Workspaces: Separate work and personal tasks with dedicated Pomodoro timers, blockers, and task lists. Fluent Design: Built with Microsoft’s Fluent Design.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) — 7 November 2026
Last technical check: 8 November 2026
Description from Flathub — AppStream (Flathub)

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