Immich

Immich is probably the most important service i host for me as its responsible to manage more than a decade of memories, Immich is a self hosted alternative to google photos, its feature rich, has a kinda slow and careful development path and luckyly in more than a year i never had any problem with it.
Unfortunately its not perfect, the android app feels a little slow, and i personally dont like the way it stores files in a chaotic folder structure, i know some people only use external libraries to overcome this issue.
There are tools to automatically migrate a google photo takeout to immich.
Another use case for it is to share picture with friends and possibly clients too, i usually create albums for this use case, friend have an account to see those and clients use a public link, a "plugin" worth mentioning for this use case is immich public proxy, its not strictly necessary but it allowes to share content without exposing the main immich instance.

Fogejo

Forgejo is a self hosted git platform, its the same service codeberg relies on, im not a developer but i use git to version control my homelab, my notes, dotfiles, and i also have a few other repos for other procedures that i need to share with friends and coworkers.
Forgejo has been rock solid for me and i really recommend it to anyone who needs private version control

Termix

Termix is a selfhosted service to aggregate SSH and RDP connections, the main benefit over plain SSH in the terminal is that it can be used remotely or on machine where your SSH key is not set up yet.
Termix is feature rich, stable, under active development, safe (even though i would strictly use this through a VPN) and rock solid.
It does also have a desktop and mobile app, even tough i didnt find much benefit in those over the web gui

Gotify

Gotify is a very minimal and simple push notification service, its supported by many self hosted services and for those that dont have an integration to it a bash script can do the job, i mainly use it to notify me when a service goes down, and the android app itself notifies me when it cant connect to the gotify instance so i know the container or the VM hosting it is unreachable.

Kutt

Kutt is a URL shortener, it doesnt do anything fancy and it just works, thats the main appeal for it, under the hood it uses a sqlite DB and Redis.

Zerobyte

Zerobyte is a frontend for the restic backup tool, it can be used to manage backups to various providers.
I've been running it for more than 6 months now and its been rock solid for now, its under very active development as it receives updates almost on a daily basis.
Having a GUI interface to manage backups is not strictly necessary but i feel like that for a very sesitive topic like backups, removing the friction of using a CLI tool while in the middle of a disaster recovery is a nice addition.
Zerobyte also integrates with Gotify, i wouldnt say that its a set and forget tool, because ANY backup tools must be strictly monitored and tested periodically, but its as good as it gets for a restic fronted IMHO.

Zed

Zed is a ide, i dont even know if it belongs in this list as its very popular, but i still see so many people sticking to vscode when extesions library aside zed is a better alternative for most use cases, i personally find myself switching between this and neovim a lot, and my biggest complaint is the lack of support for markdown, precisely a way to render it in the edit view, but aside from that its a really customizable and capable software.