Did anyone ever make an MDI web browser?
Like, you have one browser window, which has multiple subwindows within it, each of which is another browser?
@foone oh god anything but MDI. I'm having flashbacks to multi-server in mIRC
@endrift @foone this got me finding out that mIRC 7.83 was released on november 12th 2025. Love to see it going
@raphael @foone I have to wonder if Khaled Mardam-Bey has another job or not
@endrift @raphael @foone i wonder how much money he got from the us military over the years
@foone I believe the current version of edge does that. I was highly irritated by finding that out accidentially the other day.
@justabit @foone Edge is just Chrome
@vileboss @foone This specific thing might be part of the rendering engine and the same on both, I don‘t know.
But I recon that there is more to a browser than just it‘s rendering engine so… not it‘s not the same. :)
@foone the windows APIs allow you to put another executable's window into your own MDI area so this wouldnt be hard to implement with any existing single window browser methinks
@foone Opera used to be like that.
@foone AOL's client was sort of in that ball park

@foone Opera, back when it was *actually* Opera, with the Presto engine and owned by Opera Software of Norway, not yet another Chrome wearing the skin of a purchased name.

It did it with a tab bar as a window switcher, so was the best of both worlds.

The screenshot in https://www.lionsphil.co.uk/phd/ is three arranged subwindows. Unfortunately I cropped away the outer UI.

"Split view", pah.

LionsPhil's Stuff - Open Semantic Hyperwikis

Dr. Philip Boulain's PhD thesis.

@foone does Cyberdog fit the bill?
@foone i read this as MIDI and wondered why you needed multiple scroll panels in the same song

@foone Opera (real Opera, not Chromium wearing an Opera trenchcoat) was MDI, except on Mac OS

when they added “tabbed browsing”, it was basically implemented as a taskbar

@foone
Ask RiscOS users. @rjek might know some?

@spodlife @foone RISC OS basically never had MDI, and only introduced "nested windows" as a concept late in its life to ease constructing windows from multiple panes.

I do however have strong memories of Opera (maybe version 4 or 5?) having an MDI interface.

@foone Opera did that before tabs was the norm for web browsers (and while Opera was still Opera). https://en.wikipedia.org/wiki/History_of_the_Opera_web_browser
History of the Opera web browser - Wikipedia

@foone Classic Opera was like that, up to (including) version 12.
@foone longing for a browser that implemented vscode style viewport tiling grid
@foone My brain is very confident that it experienced this in an early version of the Mozilla suite, but my brain is also convinced this is a figment of its imagination.
@foone I think that was Opera's original model, and the fact the minimized windows appeared in a line at the bottom is what ultimately became tabs. I know when tabs became a thing people pointed to Opera and said "They already do it, except it's better because..." and described a classic MDI interface.
@foone oh absolutely I used one briefly, it was an IE/Trident wrapper but the MDI was kinda neat… I cannot recall the name sadly