https://woof.tech/@Purple/115344050312673769 has some installed if you have questions, although they are in .nl rather than .de
Stability, good user interface. While I am technical and enjoy playing with bleeding edge stuff, it is a struggle to get "normies" to join yet another chat system if they aren't as easy to use or reliable as signal/whatsapp. audio/video calls are also critical for most people I expect, if you want people to use it as a proper alternative.
My other half and I use monocles (used conversations originally, but had some slight annoyances). Both have a very nice interface, and are usually reliable. Now and again one of us doesn't receive the others' message, and I have no idea why, and it is it difficult to diagnose.
I only recently got my XMPP server to work through NAT properly for A/V calls, which took me ages to sort out, and the errors in the monocles interface were not helpful in diagnosing the problem.
Sometimes (rarely) monocles doesn't reconnect properly and one of us doesn't realise for a while, and then we get a flurry of messages once we reconnect. An easy way of telling when it's not connected would be good - the little icon monocles has isn't that obvious (esp now that android only allows white notification icons, which is really lame). Other chat systems seem to be more reliable in this regard.
I'm not sure if any of this helps, but best wishes with your project!
monocles will use stickers, and even (kinda) can import signal ones - I imported the mastodon ones recently, and they worked. Not tried any others.
Haha! I reported it to ebay. Man that was a faff, there's no category to report dangerous / lying listings. The chat system was crap too. I had to say "I want to speak to a human", and it put me through.
no kidding. Even 35A is enough to melt a 12v plug spring into the plastic surround.... don't ask me how i know....
I've never seen that connector in a car......
Sorry! Added ๐
It looks like even the forum is gone now, and generates 403 errors for me ๐
Not sure how Porn = Terrorism. Sounds like mission creep to me.... Oh well, I guess it makes a change from using Anti-Terror laws to stop people putting the wrong things in wheelie bins: https://www.telegraph.co.uk/news/uknews/3333366/Half-of-councils-use-anti-terror-laws-to-spy-on-bin-crimes.html
There's an old thread about someone doing it here: https://diysolarforum.com/threads/replace-apc-ups-sla-batteries-with-lithium.25424/ but sadly he doesn't give any details, or any updates.
It's wierd. APC do a really crappy small one for telecoms cabinets, but none for servers. I would love to replace my APC batteries with lithium ones.
Let us know what ones you chose in the end.
Still, it would be nice to see. Nothing wrong with second hand hardware - most of my setup is second hand. Here is a rather rubbish diagram and short explanation of how it is set up: https://mammut.gogreenit.net/@chewie/113075530030174991
I run OpenFire (https://www.igniterealtime.org/projects/openfire/) as my server. Upgrades are easy, and I like the 2000-era interface as it doesn't take up much room, but if I was starting from scratch again, maybe I would try a different server, as the way it deals with Lets Encrypt certs is a bit annoying when it's time to renew - this could be user error, but it's not obvious.
ejabberd having it's built-in "certbot" equivalent sounds great!
I use Monocles (Android) and Dino (Linux) clients, and it's pretty stable. Monocles also allows some server commands from the client, which is pretty cool. Sorting out TURN was a faff, but it doesn't help that my server is behind 1:1 NAT I guess :/
Still, now that is sorted, it's great :) I just need to find out a way of enticing my friends to use this instead of WhatsApp etc