personally for me it'd have to be remote desktop software, don't really need it myself, but being an SSH jockey, the day that i can do that but with remote desktop, and without it looking like a jpg, or needing to compile tigervnc specifically for it or some shit like that will be a good day for me.

I realize it's partially dependent on hardware, and that hardware sucks, so sometimes it just sucks. But SSH just works so well though.

Exchange and Outlook for business use.

No nothing else comes close.

It’s the last app in MS Office that does not have competition. LibreOffice fills ever other app well enough but nothing comes close to exchange and Outlook. Considering they are trying to kill it off with an always online website (OWA) we need foss competition asap.

Fusion360

Tried out FreeCad/Ondsel, and just couldn't get it to cooperate. Trying to do even basic changes would constantly result in errors/crashes. I spent maybe two weeks trying to make a single model. Then I tried making the same model in Fusion360 and was done in an half an hour. Granted, there is a huge difference in experience level here between these pieces of software, but still.

So I think my best bet for now is a jailbroken copy of Fusion360.

Final Cut Pro. I know it’s asking a lot and I know a lot of talented people have tried and are trying to build NLEs and all my gratitude to them. But—no offense intended—none are there yet and actually accomplishing this would be #1 on my magical (no effort provided by me) wishlist.

Blender has spoiled us with unrealistic expectations.

Dating websites

Canva.

Their feature set and functionality is great, but their vendor lock-in is really off-putting. Even just within their platform, it's really difficult to move assets around within workspaces.

Let alone edit graphics that you made on Canva and edit them elsewhere, say Penpot, for example.

It'd be nice to have some kind of FOSS business suite, aka point of sale, accounting, inventory etc. I'm not a fan of Intuit.

I've also not found journal software I really like. RedNotebook is about the closest. I tend to use my journal not only as a personal diary but also as a place to brainstorm and I would also like a checklist/to-do list system, and this I haven't found in any software free or proprietary. I may have to build it myself, with my rudimentary knowledge of qt.

Shapr3d

Streamlabs, Streamelements and Elgato, Logitech and Razer's software. Typically applications for streaming and content creation

SnapGene

I don't see anyone talking about it here but I'd dream of an open source alternative to AndroidTV/Apple Tv. Firstly because ATV is ultra-dependent on Google, and secondly because the interface is unclear and not really pretty.

Today I've switched to Apple TV, which is much better in terms of UX, but the OS is too closed and sideloading isn't possible...

So I hope to see some sort of CalyxOS / LineageOS for Tv arrive one day!

A service that provides sheet music. I am learning the piano and I find it difficult to find accurate and reasonable sheet music for much I want to play. Some of it is obscurity, but even when it's findable, the service is monetized to make it unpleasant

Discord. And no, Matrix/Element isn’t an alternative.

I would really like an open-source alternative to Facebook. The connection idea with friends via a social network platform I like, the bots and ads and force fed (propaganda) news I really don't like.

Plus, an open source Facebook would really hurt Zuck and that's also a win.

I sometimes needed something like powerquery from microsoft excel. To like quickly get specific data from a structured file.