Everything about the company is a mess. The only thing that is decent is the people. And by that I mean they aren't shit.
Workflows are fucked.
Clients are fucked. You're pressuring me to get this shit production ready before new year's eve and you still don't know what the text should say and want to make changes to the UI? The fuck?!
Design is a complete shit show. There is a design team. They only make a fucking psd to show clients how an interface would look like. No mobile version (but it's still expected to work!), no markup. Resolution is fucking inconsistent and whenever a change is requested, they are nowhere to be seen so I have to actually do designing on top of having to use this worthless fucking framework I hate it so much.
Codebases are turbo-fucked because of said framework.
Databases are an inconsistent, fucked up mess. No foreign key constraints because every single fucking table is using the MyISAM engine.

And the thing that really makes me incredibly angry is all the "custom systems" look the fucking same at the database level. Like 30 fucking useless tables made for stupid HR workflows that make no fucking sense.

I think that two criterias are important:

- don't block my productivity
- author should have his userbase in mind

1) Some simple anti examples:

- Windows popping up a big fat blue screen screaming for updates. Like... Go suck some donkey balls you stupid shit that's totally irritating you arsehole.
- Graphical tools having no UI concept. E.g. Adobes PDF reader - which was minimalized in it's UI and it became just unbearable pain. When the concept is to castrate the user in it's abilities and call the concept intuitive, it's not a concept it's shit. Other examples are e.g. GEdit - which was severely massacred in Gnome 3 if I remember correctly (never touched Gnome ever again. I was really put off because their concept just alienated me)
- Having an UI concept but no consistency. Eg. looking at a lot of large web apps, especially Atlassian software.
Too many times I had e.g. a simple HTML form. In menu 1 you could use enter. In menu 2 Enter does not work. in another menu Enter works, but it doesn't submit the form it instead submits the whole page... Which can end in clusterfuck.
Yaaayyyy.
- Keyboard usage not possible at all.
It becomes a sad majority.... Pressing tab, not switching between form fields. Looking for keyboard shortcuts, not finding any. Yes, it's a graphical interface. But the charm of 16 bit interfaces (YES. I'm praising DOS interfaces) was that once you memorized the necessary keyboard strokes... You were faster than lightning. Ever seen e.g. a good pharmacist, receptionist or warehouse clerk... most of the software is completely based on short keyboard strokes, eg. for a receptionist at a doctor for the ICD code / pharmaceutical search et cetera.
- don't poop rainbows. I mean it.
I love colors. When they make sense. but when I use some software, e.g. netdata, I think an epilepsy warning would be fair. Too. Many. Neon. Colors. -.-

2) It should be obvious... But it's become a burden.

E.g. when asked for a release as there were some fixes... Don't point to the install from master script. Maybe you like it rolling release style - but don't enforce it please. It's hard to use SHA256 hash as a version number and shortening the hash might be a bad idea.

Don't start experiments. If it works - don't throw everything over board without good reasons. E.g. my previous example of GEdit: Turning a valuable text editor into a minimalistic unusable piece of crap and calling it a genius idea for the sake of simplicity... Nope. You murdered a successful product.
Gnome 3 felt like a complete experiment and judging from the last years of changes in the news it was an rather unsuccessful one... As they gave up quite a few of their ideas.

When doing design stuff or other big changes make it a community event or at least put a poll up on the github page. Even If it's an small user base, listen to them instead of just randomly fucking them over.
--
One of my favorite projects is a texteditor called Kate from KDE.

It has a ton of features, could even be seen as a small IDE. The reason I love it because one of the original authors still cares for his creation and ... It never failed me. I use Kate since over 20 years now I think... Oo

Another example is the git cli. It's simple and yet powerful. git add -i is e.g. a thing I really really really love. (memorize the keyboard shortcuts and you'll chunk up large commits faster than flash.

Curl. Yes. The (http) download tool. It's author still cares. It's another tool I use since 20 years. And it has given me a deep insight of how HTTP worked, new protocols and again. It never failed me. It is such a fucking versatile thing. TLS debugging / performance measurements / what the frigging fuck is going on here. Take curl. Find it out.

My worst enemies....

Git based clients. I just hate them. Mostly because they fill the niche of explaining things (good) but completely nuke the learning of git (very bad). You can do any git action without understanding what you do and even worse... They encourage bad workflows.
I've seen great devs completely fucking up git and crying because they had really no fucking clue what git actually does. The UI lead them on the worst and darkest path imaginable. :(

Atlassian products. On the one hand... They're not total shit. But the mass of bugs and the complete lack of interest of Atlassian towards their customers and the cloud movement.... Ouch. Just ouch.

I had to deal with a lot of completely borked up instances and could trace it back to a bug tracking entry / atlassian, 2 - 3 years old with the comment: vote for this, we'll work on a Bugfix. Go fuck yourself you pisswads.

Microsoft Office / Windows. Oh boy.
I could fill entire days of monologues.
It's bad, hmkay?

XEN.
This is not bad.
This is more like kill it before it lays eggs.
The deeper I got into XEN, the more I wanted to lay in a bathtub full of acid to scrub of the feelings of shame... How could anyone call this good?!?????

Every single stakeholder in my company tells me that I should be working on something different, every time I talk to them. For example - we've got some issues, that I've ranted on previously. I go to my manager, and tell him that it's going to take longer than I'd hoped, because the author of this part of the codebase wasn't familiar with functional programming or OOP, didn't document anything, and just generally produced an unmaintainable, borderline indescribable mess. The next guy after him made it all so much worse, because they're both a couple of tryhard douchebags, and I hope they fucking die. For real. I hope fire ants are involved.

Anyway, getting carried away there, whew. So I tell my manager that we'd be further ahead just replacing the code, because it's only doing a couple of things, and should not be so complex. He says "cool, but what you really need to be doing is rebuilding this other thing." So I switch gears and work on that other thing until I hit a point that requires the input of another stakeholder. I go to talk to this guy, and all hell breaks loose "why are you working on that, this is higher priority", and I explain the sequence of events. Manager denies having said what he said, I look like an asshole, yet again. Then the old "this should be simple, just change this" from the dudes who don't know code, and don't want to know. I try to explain, offer to show them precisely why their "simple ask" is anything but, but they just start screaming about how they hate technology. Yeah, well me fucking too. I keep hearing about how much "job security" I have, but man I'm going to lose my mind at this rate. I have seventeen motherfucking things that are "emergencies", and as many fucking dumb ass unintuitive workflows to go through to get them changed. All on production, because this place is fucking stupid. Just let me discard this shitty legacy code and be done with it already. FUCK.

Thank fucking fuck it's friday. In about six, seven hours, my goal is to be so fucking wasted that I can't feel my face. Get drunk, play with the dog, install a new distro on the desktop, maybe play a little guitar (the guitar is normal sized. It's not a ukulele or anything). Perfect friday night.

Starting to wonder why I tend to like our QA people so much: they often seem so much saner. Yes, sometimes they quibble as with the complaints about a page that is hidden from the user anyway, but they would usually not creep to deep into the hole creating most unintuitive workflows and abysmal logic.
Disclaimer: We're more like backend devs, but we had to do a UI which was beautifully slaughtered by the CEO messing with it - guess what's happening with the new one - and because of that... thing I already nearly smashed my Mac because stupid entered credentials for updating software would only be applied if you defocused once out of the password entry box. Fucked up stuff like this, which devs meddle with, give up, just shrug it off and dump it on the (l)user.

Or a more recent example: So PM wanted a stupid "Apply to all" buttons on a list that can be filtered. Guess to which items the actions should be applied if you filtered it and you currently only see a small selection in your window! Yes, of course it still applies to all items in the universe. QA guy who's just trying the buttons comes to me: "Hey, you sure this "apply all"-stuff supposed to work like that?"

Third example to end this long QA-praise: So there is this virtual appliance we build and we should support another stupid hypervisor.. and he found the kernel modules I have to activate additionally so we can just convert the existing image without having to create a new build system.

Catch
Log error
Throw Exception