> Author's inspirations are BBS + 'offline first", and together, this produces something like Android Instant Apps. On first visit, your client downloads some remote code, as a signed package. Then the code gets run, and it can only talk back to the originating server. The overall result gives all powers to server owners, and IMHO is pretty terrible for users.

Except 'One desktop many devices' and 'your desktop, reaching out' and 'the tools used to browse, are used to host'. The first server in your network is.. yours. So it gives all controls to you. That's IMHO pretty excellent for users. Have your home directory (even if it is just localhost) be proxy, cache and external resolver. Preset for this is included in the next release.

> There is forced, instant auto-update. You don't get to postpone updates, and in fact, there is a system for real-time update of all of the clients.

Not forced, protocol level opt-in, the cli tool as a devtool does that by default because its a devtool. The variant the desktop appl can expose in UI does not. Protocol command to list new applications has a field for 'notify me of updates'.

> There is no inner links by design. It's like being in giant SPA, bookmarks are useless.

The inner links are not included in a textual representation to not repeat the URL degradation of 'arguments encoded in URL but also in cookie and you only share the url'. They are there but controlled to the user, not the application. There is protocol for 'snapshot appl state', 'restore from snapshot'. There is much more to this that was omitted because 6500 words already.

> User has zero power of customization (unless author designs a system for it). Adblock? Nope. Increase font size or change to more legible font? Not with A12. Custom userstyles? Not here.

Fonts, colors-theme, accessibility preferences etc. are all part of the interface between the browser-UI app and the hosted one without any other changes necessary. Engine itself gives available font-set a separate namespace for security. Every single exposed API function is hookable. On that note:

> - Oh, and if you want to extract information, there is no convenient HTML representation to parse, or an API to intercept. It's all internal state, driven by server. Maybe start reverse-engineering stuff.

Instead there is the scene graph of the browser to export as lua, exposed as a script function itself so you can hookscript it. As a trivial one: https://codeberg.org/letoram/arcan/src/branch/master/data/sc...

It reads as 'after n monotonic ticks, create a snapshot of the scenegraph and store.'. These are Lua scripts themselves. This can be triggered by the browser-UI app. Nodes with a text backed origin has the original text, with annotation for extra details or screen-reader accessibility.

> About cookies and privacy: each user gets identity, and it is immediately sent to a server at each connection. That identity is salted so it's different between app, but within app, it's permanent.

The tools for client side key management does key differentiation per directory by default and ephemeral by default. You opt-in explicitly with 'I want a persistent keypair tied to these sets of discovery points referenced by my-petname'.

> Apparently "eval()" is disabled, to prevent "‘middleboxes injecting code’ adtech style tampering." I had to read this twice and check the calendar.. it's 2026, the last time middleboxes could inject code was over a decade ago, before https was everywhere.

Travel more. They are still there. But also, outside of presence in XSS,CSRF,SSRF, ... that are still here, the rest moved to 'SSL removed here :-)' side as per the Snowden leaks. Then they moved to hijacking plugins, npm packages or just shady deals with the site's 888 partners because streaming pornsites need revenue.

> The only allowed connections are to originating host ("directory"), and it has to proxy whatever resources it has. It is no longer possible to keep control of HTML and offload large files to CDN - if you want CDN, you go all the way in and surrender all control.

Which leads into the 'external resolver' part. Large-files retrieved and reference by hash. Resolver mapping that. Swap that out for one that forwards to your CDN or IPFS or your local data-hoarder cache.

> Author talks a lot about local-first, and you can bundle media with code in initial downloads. But many examples are of regular remote apps. "image sharing" app which loads images on-demand. A video player which can only stream videos. A complex app which is backed by VNC-like remote desktop connection. None of this is local-first!

Yet all of the applications currently hosted, including the presentation slides one, are local first and the development workflow is such that you have to say "I want to access networked resources" and the default tooling response is "no".

Arcan-A12: Weaving a Different Web