devdocs.el VS Dash-iOS

emacs integration: https://github.com/astoff/devdocs.el

devdocs.el: Documentation reader with quick and handy lookup commands. It is similar to the built-in Info reader, but has a different (likely larger) document coverage.

I use this (https://github.com/astoff/devdocs.el) emacs package to download devdocs locally and access them from emacs, which is pretty great.

Support for other languages is a good point. Most don't ship info documentation. :P If you want something inside a normal Emacs buffer rather than a separate browser-like application, maybe you'd enjoy devdocs.io and astoff's devdocs.el package.

+1. I'm using an amazing Emacs package that treats DevDocs kinda like Dash: https://github.com/astoff/devdocs.el

info-like: https://github.com/astoff/devdocs.el

devdocs.el to read documentation

Wow, so many devdocs packages! Of the two I mentioned, devdocs-browser is the one in the emacs-devdocs-browser repo you found. But the other one I was thinking of didn't turn up in your search: devdocs. I wasn't aware of the others you found, probably because they aren't on GNU ELPA or on MELPA.

Not a complete answer, but I hope Markdown is or becomes the standard for offline docs and text for local/offline consumption. I only ever write in markdown anyway (usually with http://obsidian.md).

The closest thing I know of for a service like RSS to download documents is [Dash for macOS - API Documentation Browser, Snippet Manager - Kapeli](https://kapeli.com/dash).

There are so many great sources of information out there and tools to improve the developer experience of documentation. Dash can make some of these online resources local for instant search and access on-the-go, if you prefer.

For iOS, there used to be dash, but I'm learning now that was discontinued.

If developer accounts count, then you can run unsigned / self signed code on iOS as well. That's how Dash for iOS was distributed for some time when it was banned from the App store: https://github.com/Kapeli/Dash-iOS