I took an OS in college in 2006 and the big project that my prof required us to do was to make modification of visopsys. The software was primitive at that time but still had UI interface.
I emailed the author to ask some questions in my project. The author had connection with my prof and informed my prof about this. My prof told me that I was not allowed to ask the author regarding this project. So I had to figured out on my own.
It was fun to play around with and learnt how things work at deep OS level. It was a good memory for me :)
And you guys notice anything about my username? :)
Interesting. Never heard of this system before. It's apparently a monolithic kernel, developed almost exclusively by originally Canadian programmer Andy McLaughlin since 1997. The system has a graphical user interface, preemptive multitasking, and virtual memory. It is implemented in C and IA-32 assembly language. Here is a 2012 interview with the author: https://www.pingdom.com/blog/visopsys-operating-system/.
This is very very cool, and unlike a lot of other "hobby" OSes actually looks usable as a daily driver if your needs are basic (kids, elderly, older/cheaper hardware, etc).
While for nerds computers have become these monstrously powerful things that can do everything under the sun, there's definitely still plenty of people who just want a computer to write down notes, keep a calendar, use the calculator... eg the things home computers were originally made to do.
True in theory, but in practice due to our economy being based on growth at all costs, iOS doesn’t really fit the bill anymore.
Nowadays even iOS will randomly change its UI and send you “notifications” or “suggestions” (modern euphemism for “ads”) to subscribe to Apple TV* or iCloud.
I was forced to buy a new iPhone recently (my 16 was stolen), and had iOS 26 foisted on me.
My god, is it bad (for me, I'm sure some like it). The ugly glass UX, the weird floating controls, the always on display, blah blah. It's not innovative at all, it's like they just had to redo everything simply to make it seem "new".
Always-on display can be disabled but for the rest I agree. It doesn’t really do anything more that my 3rd gen SE but is way more annoying to use (bigger size, no fingerprint reader nor home button).
So what is better? I think you're wrong and a tablet with iOS or android is the best form factor for computer illiterate people to get something done. Despite whatever bullshit they added, everything else is worse. But maybe you know of something better?
Why with Tahoe did they get rid of the volume indicator that popped up middle of screen that they’ve had for 20+ years - a critical indicator that the volume controls are even working in the first place - in favor of a tiny set of bars at the top right of my screen in the menu bar where I can barely make them out? It’s also less precise about my volume level now. Why?
That sure seemed random. It sure isn’t functional.
Because before you many users complained "IT TAKES UP THE WHOLE SCREEN!!!!" and it was a bit annoying to be honest when it obscures a video or something else you're trying to view.
> What youre describing is called iOS on a large iPad.
iPad was my gateway drug into Apple when I got it as a gift for my aunt and saw how easy and intuitive it was to use, and also to develop for.
Then after Jobs' whip fell from his cold hands they went into the realm of "mystery meat" menus and arcane gestures where swiping from seemingly every different angle of the screen edge does something different. Swipe from the top-right corner to get the Control Center, but swipe from the center-top to see the Notifications?? Yeah not gonna bother training an elder on that. I can't dare get my mom a modern iPhone now where she has to swipe up to unlock: it has be an iPhone SE, the last iPhones with a Home button.
I am the filthiest of nerds but I still can't get myself to remember how the heck iPad multitasking works. Apparently they can't either, they changed it again in 26 and now I can't easily get Notes etc. by swiping in from the side when watching a video etc. and I haven't bothered to look up how to do that now.
In any case all this only shows that attempting a one-size-fits-all UI can't really go all the way. iPhones/iPad have had a respectable run, they were lucky to have an OS Usability tyrant in charge, but maybe it's time to accept that UIs need an option for Simple vs Expert or something.
> the realm of "mystery meat" menus and arcane gestures where swiping from seemingly every different angle of the screen edge does something different. Swipe from the top-right corner to get the Control Center, but swipe from the center-top to see the Notifications?
Ha, I'm a heavy long term iOS and MacOS user, and I still haven't learned what all the swipes and clicks in random places actually do exactly.
I just I know sometimes click by accident at the very bottom right of my display on MacOS and it swishes all the windows to the right (why? I have no idea?!), clicking again brings them back luckily.
On iOS I resonate with your comments about the swiping from different places to get different things. The only gesture I can ever remember is swiping from top right to get the quick system menu to turn wifi on/off etc. I can never figure out how to clear my notifications or why they're sometimes displayed and sometimes aren't. And the other swipes and menus are completely beyond me.
I'm a 40 year old life long software developer.
"iOS on a large iPad" has some good affordances but is definitely NOT some kind of panacea for elderly or computer illiterate users!
I fully believe that those inside Apple fighting for customized UI are relegated to hiding them as accessibility options. Apple has never been very fond of customization (one way, Apple's way, or the highway).
Most kids and most elderly need to run a mainstream browser from time to time, and this Visopsys will almost certainly never be able to run a mainstream browser.
> and unlike a lot of other "hobby" OSes actually looks usable as a daily driver if your needs are basic (kids, elderly, older/cheaper hardware, etc).
While building a non-Linux OS is very impressive, however this is not useful as a daily driver at all.
If the OS doesn't even have basic browsers such as Chrome or Firefox, it can't be remotely used as a daily driver to anyone who isn't a computer enthusiast.
Ahh this OS is small enough that a university professor used it as the basis for his class assignments: write a device driver for it, or a pipe implementation, if I recall correctly. I thought it was pretty genius at the time, and it was certainly quite a challenge for the students too.
take a look at AtheOS it's successor SyllableOS. created by a single developer, another single developer took it over (syllable) and it shortly became an open source project before it went defunct again. But it made impressive gains in the 3 years of initial development.
i miss those days of everyone and their mom creating an OS for giggles
Don't forget SkyOS. And there's plenty more, with SerenityOS being one of the latest notable examples. Those days never ended. Also ekhem ekhem TempleOS, as single developer as you can get.
Around 1997 I learned the concept of RTFM! Obviously my father already taught me to look in the DOS and WordPerfect manuals to learn about features and commands one might use. Great learnings.
I always found semantic versioning a little too verbose. Particularly when deciding when to release major versions. OSX was on version 10 for many years but of course released a new "major" version every year.
Semantic versioning is just something everyone does in software development, but is is really that necessary?
Versioning is a tool to communicate changes and backwards compatibility to the users. SemVer makes sense in a lot of cases, but it neither covers everything (eg. compare with Debian/Ubuntu packaging versions), nor is it always needed (think of REST API versions which usually only go with major versions, and commonly multiple major versions from the same codebase).
Semantic versioning is for APIs, not for functionality. So it's for developers consuming that API (whether a library, or a service).
For releases in production, use a calendar version. v2025-11-02 is a clear release tag. Add preciseness as required. There should be a SBOM/Manifest (Bill Of Materials) of the versioned major components and configuration for that overall release.
For users, it depends on the type of user and what they expect. Their focus is on functionality. So when there's a new feature, bump the number.
It's a bit like the car model. It can be random extension letters like "-X", or "6Si".
Developers are "users" (of a library, API, tool...), and "API functionality" is a subset of "functionality": what purpose would such distinction serve?
For example, in end user desktop software (say a text editor), how would you indicate a security bug fix for an old version v2023-11-02 without forcing users to pay for a new version of v2025-09-15?
Again, versioning is a tool, and depending on the release structure of a project, SemVer might work well or it might not (including for APIs/libraries).
Speaking of these, does anyone recall the AtheneOS distribution/OS. There’s an archive.org copy of the desktop environment version of it, but I recall there was a really fast version with only 2D graphics and it was a full distribution.
Can anyone validate whether this is real? I tried contacting the guy who wrote it but the Companies House address for his company (Rocklyte) bounced the letter.
I emailed the author to ask some questions in my project. The author had connection with my prof and informed my prof about this. My prof told me that I was not allowed to ask the author regarding this project. So I had to figured out on my own.
It was fun to play around with and learnt how things work at deep OS level. It was a good memory for me :)
And you guys notice anything about my username? :)
While for nerds computers have become these monstrously powerful things that can do everything under the sun, there's definitely still plenty of people who just want a computer to write down notes, keep a calendar, use the calculator... eg the things home computers were originally made to do.
This doesn't look very usable at all by someone who isn't basically a computer nerd.
Nowadays even iOS will randomly change its UI and send you “notifications” or “suggestions” (modern euphemism for “ads”) to subscribe to Apple TV* or iCloud.
My god, is it bad (for me, I'm sure some like it). The ugly glass UX, the weird floating controls, the always on display, blah blah. It's not innovative at all, it's like they just had to redo everything simply to make it seem "new".
You and I have very different ideas of “random” I think.
Indeed, not ‘random’. With respect to iOS26 what word should one use? Premeditated? Deliberate? Maliciously?
That sure seemed random. It sure isn’t functional.
That's all the feedback I need! I don't need my vision stuffed with that information.
But yeah, it did look cute and should be an option between "Expressive" or "Minimal" UI.
iPad was my gateway drug into Apple when I got it as a gift for my aunt and saw how easy and intuitive it was to use, and also to develop for.
Then after Jobs' whip fell from his cold hands they went into the realm of "mystery meat" menus and arcane gestures where swiping from seemingly every different angle of the screen edge does something different. Swipe from the top-right corner to get the Control Center, but swipe from the center-top to see the Notifications?? Yeah not gonna bother training an elder on that. I can't dare get my mom a modern iPhone now where she has to swipe up to unlock: it has be an iPhone SE, the last iPhones with a Home button.
I am the filthiest of nerds but I still can't get myself to remember how the heck iPad multitasking works. Apparently they can't either, they changed it again in 26 and now I can't easily get Notes etc. by swiping in from the side when watching a video etc. and I haven't bothered to look up how to do that now.
In any case all this only shows that attempting a one-size-fits-all UI can't really go all the way. iPhones/iPad have had a respectable run, they were lucky to have an OS Usability tyrant in charge, but maybe it's time to accept that UIs need an option for Simple vs Expert or something.
Ha, I'm a heavy long term iOS and MacOS user, and I still haven't learned what all the swipes and clicks in random places actually do exactly.
I just I know sometimes click by accident at the very bottom right of my display on MacOS and it swishes all the windows to the right (why? I have no idea?!), clicking again brings them back luckily.
On iOS I resonate with your comments about the swiping from different places to get different things. The only gesture I can ever remember is swiping from top right to get the quick system menu to turn wifi on/off etc. I can never figure out how to clear my notifications or why they're sometimes displayed and sometimes aren't. And the other swipes and menus are completely beyond me.
I'm a 40 year old life long software developer.
"iOS on a large iPad" has some good affordances but is definitely NOT some kind of panacea for elderly or computer illiterate users!
There’s a complete lack of project leadership and it’s strangely worrying.
I mean, that's fine, if there is no overarching vision. Just let users CUSTOMIZE the UI the way we want. That's it.
That would actually be easier on the UI designers too. Perhaps just a trifle bit complicated for the coders, but they have ＊AI＊ now, right??
Most kids and most elderly need to run a mainstream browser from time to time, and this Visopsys will almost certainly never be able to run a mainstream browser.
While building a non-Linux OS is very impressive, however this is not useful as a daily driver at all.
If the OS doesn't even have basic browsers such as Chrome or Firefox, it can't be remotely used as a daily driver to anyone who isn't a computer enthusiast.
Visopsys - https://news.ycombinator.com/item?id=18147201 - Oct 2018 (6 comments)
Much of modern operating systems are the hordes and hordes of drivers; the fundamentals aren’t terribly complicated; just lots of detail.
i miss those days of everyone and their mom creating an OS for giggles
It’s the only OS endorsed by God.
https://youtu.be/5MZljgXW2WA
Maybe they mean something else by visual.
Oh and:
https://visopsys.org/about/screenshots/
But jokes aside, I always enjoy reading about custom OSes.
Semantic versioning is just something everyone does in software development, but is is really that necessary?
For releases in production, use a calendar version. v2025-11-02 is a clear release tag. Add preciseness as required. There should be a SBOM/Manifest (Bill Of Materials) of the versioned major components and configuration for that overall release.
For users, it depends on the type of user and what they expect. Their focus is on functionality. So when there's a new feature, bump the number.
It's a bit like the car model. It can be random extension letters like "-X", or "6Si".
For example, in end user desktop software (say a text editor), how would you indicate a security bug fix for an old version v2023-11-02 without forcing users to pay for a new version of v2025-09-15?
Again, versioning is a tool, and depending on the release structure of a project, SemVer might work well or it might not (including for APIs/libraries).
Can anyone validate whether this is real? I tried contacting the guy who wrote it but the Companies House address for his company (Rocklyte) bounced the letter.
RISC OS uses cooperative multitasking: http://www.riscos.info/index.php/Preemptive_multitasking
That takes me back.