Zeal Reviews and Details

Questions & Answers

1. Who are some of the biggest customers of Zeal?

   • Zeal is free software with no accounts, so we do not know or track who uses it. It is used by individual developers and teams worldwide.

2. Which are the primary technologies used for building Zeal?

   C++ and Qt 6, with Qt WebEngine (Chromium) rendering the documentation pages. SQLite powers the search index, libarchive handles docset extraction, and the build uses CMake and Ninja.

3. What's the story behind Zeal?

   Zeal started in 2013 as a free, open-source way to get Dash-style offline documentation on Linux, where Dash (macOS-only) was not available. It adopted the same docset format, grew Windows support, and has been developed in the open ever since, maintained by a small team in their spare time with contributions from the community.

4. How would you describe the primary audience of Zeal?

   Software developers who look up reference documentation many times a day: languages, frameworks, libraries, and tools. More broadly, anyone who wants a personal reference library that works without internet access. The docset catalog is developer-focused today and gradually broadening.

5. Why should a person choose Zeal over its competitors?

   Compared to Dash, Zeal is free, open-source, and runs on Linux and Windows rather than macOS.

   Compared to web-based tools like DevDocs, Zeal is a native desktop application that works with no connection at all, supports a much larger docset catalog, and can be summoned from anywhere with a global shortcut. Compared to searching the web, lookups are instant, ad-free, and exactly scoped to the libraries you actually use.

6. What makes Zeal unique?

   Zeal combines things that usually come as trade-offs: it is fully offline, native, and free.

   All documentation is stored locally and searched with instant fuzzy matching across every docset you have installed at once. It uses the same docset format as Dash, so the catalog covers every major language, framework, and tool, while running on Linux and Windows as open-source software under GPL-3.0-or-later.

Is Zeal good?

Social recommendations and mentions

• Local-First Documentation: What It Is and Why Your AI Agent Needs It

  This isn't a new idea for developer tools. DevDocs, Zeal, and Dash have offered offline documentation browsing for years. What's new is applying this architecture to AI agents — giving your coding assistant the same offline, instant, version-accurate access to docs that you'd want for yourself. - Source: dev.to / 5 months ago

• Ask him: Linux offline knowledge base app?

  Zeal might be what you are looking for - https://zealdocs.org/. - Source: Hacker News / 8 months ago

• Self-Host and Tech Independence: The Joy of Building Your Own

  I find that self hosting "devdocs" [1] and having zeal (on linux) [2] solve a lot of these problems with the offline docs. [1] https://github.com/freeCodeCamp/devdocs. - Source: Hacker News / about 1 year ago

• Patterns for Personal Web Sites (2003)

  Yeah, I keep thinking that CHM was the peak format for offline docs. Today we have Kiwix [0] and Dash/Zeal [1] – both amazing projects, but somehow they feel more complex, and the formats they use aren’t as ubiquitous. [0]: https://kiwix.org/en/ [1]: https://kapeli.com/dash for macOS, https://zealdocs.org/ for others. - Source: Hacker News / over 1 year ago

• DevDocs

  There's also Zeal (https://zealdocs.org/) which is basically the same as Dash but open source and runs on non-Mac devices. - Source: Hacker News / over 2 years ago

• How would you work effectively with an extremely slow 56Kbps connection?

  For offline tech documentation you can use Zeal. Must have tool for poor internet connection places. Present in ubuntu repos. https://zealdocs.org/. Source: over 2 years ago

• Ask HN: How do I code offline for a week?

  Check out Zeal if git cloning docs is something you do. https://zealdocs.org/. - Source: Hacker News / almost 3 years ago

• Ask HN: How do I code offline for a week?

  There’s stuff like https://zealdocs.org/ that allow you to take all relevant documentation with you so offline coding will work. If you just want to be productive, you could also bring a lot of books or downloaded tutorials on a drive. Btw, make sure your drive is encrypted and you think of a way to backup your data so you don’t lose the offline progress. - Source: Hacker News / almost 3 years ago

• Memex is already here, it’s just not evenly distributed

  I’d suggest you look into Kiwix¹ and also Zeal². 1. https://www.kiwix.org/ 2. https://zealdocs.org/. - Source: Hacker News / almost 3 years ago

• What's the Difference Between `ruby-doc.org` and `docs.ruby-lang.org`?

  For offline documentation, I use Zeal (called Dash on macos) which looks/works almost identically to rubydoc.info but much faster since it's offline, has a standard interface for all installed language documentations, and only 1 global hotkey away while programming. Source: about 3 years ago

• Googling for answers costs you time

  I highly recommend using local solutions to this local issue: Zeal[1] (aka Dash[2] on MacOS) Load up the "docsets" of your languages (lightly edited HTML docs for indexing purposes) and use a global keyboard shortcut (F8 for me) to pull up Python/Postgres/Terraform docs, searching for the right function without internet query. This isn't straight up applicable to all questions of course, but "How do I search... - Source: Hacker News / about 3 years ago

• Ask HN: I won't have Internet access for months, how could use my time?

  There's https://zealdocs.org and it's something similar if not the same. For Mac you need to buy the Dash app. - Source: Hacker News / about 3 years ago

• Where/how do you view and search Nim's docs?

  I'm using Zeal offline documentation browser for that. You can download separately the whole Nim documentation as a "doscset" and search procedures, modules, types, etc by their names. It also has integrations with many editors. Source: over 3 years ago

• Downloading and updating official documentation as it changes

  I also use Zeal for some things: https://zealdocs.org/. Source: over 3 years ago

• Where do i get offline wiki?

  You can also try using an offline documentation browser tool such as Dash (macOS only) and Zeal (cross-platform). Source: over 3 years ago

• My thoughts after a week of ChatGPT usage

  As a dev - It's a good (very good, in fact) alternative for man, tldr, cheat and zeal (and probably tens of other projects - sorry for not mentioning you) with a very pleasant interface - which was the point I think ;). Source: over 3 years ago

• Best quick references?

  I've started using Dash on the mac. Zeal uses the same docsets on Linux/Windows. It's mostly a repackaging (and indexing) of the standard docs, but the search box does such a good job getting me to exactly the right place that it works as a quick reference for me. Some of the docsets include "cheat sheets" but I don't think there are any I find myself using much for django. Source: over 3 years ago

• there is a command that would host the docs locally, does anyone remember it?

  The only way I see is to install Zeal. Once installed you can install the docset for anything (almost) you may want, including the Python doc. Source: over 3 years ago

• linux c++ devs, what does your dev environment look like?

  Neovim in tmux, or neovim-qt if I don't need to be able to attach to the session remotely. I occasionally bounce back to Emacs, but that's becoming less often now that the TreeSitter and LSP plugins for Neovim have gotten so good. All of that lives in an Xorg session managed by i3. Docs live in zeal. Source: over 3 years ago

• The Overflow Offline Project – Stack Overflow Blog

  You should check out Zeal, it's an offline documentation browser with existing documentation packages for HTML and a whole bunch of things https://zealdocs.org/. - Source: Hacker News / over 3 years ago

• Ask HN: Offline resources during internet outages?

  Offline documentation browser like https://kapeli.com/dash or https://zealdocs.org/. - Source: Hacker News / almost 4 years ago