Software · Development

Zeal

Your offline reference library.

Completely free
Windows and Linux
Open source
No account

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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 Official plan pages (pricing, licence, terms), 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: Oleg Shparber
Latest version: 0.9.2 (31 October 2026)
Latest activity: 1 November 2026
Source code: github.com/zealdocs/zeal

At a glance

All of Zeal is free: no feature is locked behind a paid plan, and its code is open.

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

Zeal is an offline documentation browser that keeps the references you rely on right on your computer, ready the moment you need them — on a plane, off the grid, or just on flaky Wi-Fi. Instant search takes you straight to the right page before a browser tab would even finish loading. Build your personal library from over 900 docsets in the same format Dash uses, covering programming languages, frameworks, and tools. Open results in tabs and summon Zeal from anywhere with a global shortcut.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 9 November 2026
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: 7 November 2026
Description from Flathub — AppStream (Flathub)

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