Any recommendations for an alternative to the Windows clock app?

Just install Linux, it's time.
- I opened this post just to confirm there would be this reply.
  
  😂 pretty much the reason I posted it.
- confirmed; decided one weekend to delete windows off both my computers and install mint. never looked back.
- Pee your pants to warm your legs 🙃
  OP is working on ditching Windows.
  
  Well then work faster dammit!
  /s

Ditch technology.
Sundials are a thing you know!
- They are unreliable, since people started storing their damned clouds in my sky
  
  Where else am I supposed to store my data? People keep telling me to store my files in the clouds, but when I do it's always "ah man, it's cloudy again, I want sunshine!" and "why is it snowing paper?"
  
  Have you tried lighting it using a fire? That way the clouds don't bother it

Is this real? The alarm app requires login?
- I searched it and found there were some cases of people being asked to login when they used the clock app but it appears to have been a bug.
  
  I don’t know why that app would even have the code to request a login. It’s a clock.
  
  I haven't encountered this luckily. The only use case I can imagine is syncing alarms and timers across devices? But...I use timers for working, and alarms for waking up. I don't really want those to sync across devices. And it doesn't really seem worth a backup - it takes 30 seconds to set a new alarm.

Ah yes, the ol' windows app that got updated in the background but then also needs to update when you open it for some reason.
Sometimes this happens when installing a new app, it will need an update literally seconds after installing it.
The Microsoft app store is such a broken mess.

I recommended a watch
Not a smart watch. A regular digital. They work great. Highly reliable. No login necessary.
- Battery-powered is never reliable though.
  
  There are watches that don't require a battery. Some require you to rewind by hand, by turning the crown, others are powered by wrist movements.
  
  Why not? The battery lasts about 2 years, and the LCD numbers slowly (and very noticeably) get darker over a period of weeks before it dies, so you have plenty of notice.

I have ditch that spyware OS years ago so I never tried the following software but check : ElevenClock

i don't have windows anymore but i used to use rainmeter for my clocks.
https://visualskins.com/skin/minialarm

But what do you need, do not take it wrong but you can just use a physical clock. Do you want system integration? Or what exactly?

Linux clock app?

Web app might be best. I'd start with one built into a search engine. Try duckduckgo or brave search.

Not exactly a replacement but I like www.sharpworldclock.com.
I needed something that display time from various countries in long straight horizontal bar and I needed it to speak out the time in the language I am learning. It doesn't seems to be open source though, but I can't find anything else similar.
- I wonder if there's a Linux clock you could run under WSL?
  
  watch -n 1 date
  
  I mean, there's these ones, for example:
  https://apps.kde.org/kclock/
  https://apps.gnome.org/Clocks/
  You can download them as Flatpaks and then this guide supposedly allows running Flatpaks under Windows: https://github.com/AbelFalcon/Run-Flatpak-Windows11
  I'm guessing, the Xming thing is needed for graphical applications? I have no idea, if that's what people generally use for that...
- It wouldn’t be too hard to make an open source version of this. I’d offer to do it, but I’m busy at the moment. You could ask a local college professor to make an assignment around this though. It would be a great learning project for a student.
  
  Thank you. That will be cool, No worries if you have no time it is not critical. Screenshot below is how I have sharpworldclock setup currently as a single horizontal strip.
  Listing out my requirement for anyone interested in such a project.
  A non fancy clock that display time of various countries in a thin horizontal bar size of a typical windows title bar. Include name of country/city or abbreviation, customization. see screenshot above.
  always on-top
  click through
  speak out time in language preferred, TTS
  some basic multi-zone scheduling alarm features
  meeting planner, displays all the times in my list to assist in planning meetings.
  other stuff like sticky notes, weather, news feed are bonus, not important.
  Actually if it can display the various clock in the taskbar it will be even better, like 1stClock https://www.1stclock.com/world-time-zone-clock.php I like how 1stClock is non-intrusive, small and out of the way and boring, no fancy graphic or UI.
  A open source program like 1stClock that display multiple time zone in task bar and speaks out time at certain interval will be good enough for me. Or maybe I just need to find a separate program that speaks out time in my preferred language.