Zeal
DevDocs
Dash for macOS
Velocity
DASH
Papaya Global
Greenboard
Zest
Eclipse
Microsoft Visual Studio
IntelliJ IDEA
Xcode
VS Code
Netbeans
PyCharm
PhpStorm
Zeal is a free and open-source offline documentation browser for developers. You download docsets for the languages, frameworks, and libraries you use, and Zeal lets you search across all of them at once and jump straight to the symbol, class, or function you need. Because everything is stored locally, lookups are instant and work with no internet connection, which makes Zeal useful on flights, on locked-down networks, or any time you want to stay focused without a browser full of tabs.
Zeal is a native desktop application rather than a web wrapper, so it launches quickly and stays light on resources. It requires no account and includes no built-in tracking, and it runs on both Linux and Windows. Docsets cover hundreds of technologies and can be added or updated from within the app.
Zeal EclipseZeal's answer
Zeal's answer
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.
Zeal's answer
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.
Zeal's answer
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.
Zeal's answer
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.
Zeal's answer
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.
Based on our record, Zeal should be more popular than Eclipse. It has been mentiond 67 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of 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 โ 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
Zeal might be what you are looking for - https://zealdocs.org/. - Source: Hacker News / 7 months ago
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
Yeah, I keep thinking that CHM was the peak format for offline docs. Today we have Kiwix [0] and Dash/Zeal [1] โ both amazing projects, but somehow they feel more complex, and the formats they use arenโt 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
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
๐ก You can still install extensions on vscodium using Open VSX Registry, which is an opensource project by Eclipse Foundation. - Source: dev.to / 10 months ago
For example I can access eclipse.org in chrome without issue. I'm seeing my PA cert when I check it's trusted. However when I run the eclipse installer it fails which I suspect is because of the decryption. I'm seeing this log in the decryption log both before and after installing the IA cert and when both using the installer or browsing the site. Source: about 3 years ago
I think u/rayok's post is probably going to be your most relevant lead. Maybe it's a JRE related thing. I'd go ahead and reinstall eclipse from the eclipse.org download page rather than your OS app store. Maybe the JRE didnt get installed correctly idk. Source: about 3 years ago
"Failed to fetch the latest release from eclipse.org". Source: over 3 years ago
After updating the Mac Air M1 Eclipse just didn't start. I downloaded AArch64 again from eclipse.org and now it works. Would there have been a smarter way to fix this? Source: over 4 years ago
DevDocs - Open source API documentation browser with instant fuzzy search, offline mode, keyboard shortcuts, and more
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Dash for macOS - Dash is an API Documentation Browser and Code Snippet Manager. Dash searches offline documentation of 200+ APIs and stores snippets of code. You can also generate your own documentation sets.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Velocity - Velocity gives your Windows desktop offline access to over 150 API documentation sets provided by...
Xcode - Xcode is Appleโs powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.