Afternoon, gang.
I found out about this one totally by accident, following @williwaw 's reply to @hundido in this thread:-
This is DeltaChat-portable.
At first glance, there's apparently nothing to distinguish DeltaChat from all the other messenger/chat apps out there. However, you have to dig a wee bit deeper.....and THEN you find out that DeltaChat is email-based, so doesn't communicate, per se, over the usual mobile network at all.
Unlike most desktop chat clients, which these days invariably require a mobile "app" to connect with, this one works solely via the traditional email infrastructure. To quote their website FAQ & blog, DeltaChat is essentially "email dressed-up in a new suit of clothes" for the modern world. Heck, Thunderbird has an available, built-in 'chat client' these days, so it's not such a far-fetched idea really.
To me, it looks awfully like a refresh of Telegram, which used to be my favourite until they, too, succumbed to the smartphone 'disease'. However, being solely email-based does mean that it IS chat-ONLY.....unlike most others, which support video-calling, too. You can send/receive photos & videos as attachments, of course, but live videochat isn't really on the cards via email!
As such, this probably won't appeal to most of you.....but then, it's not like there aren't videochat clients a-plenty out there already, so a return to older values is in fact a nice change of pace.
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This is built around the AppImage, though .debs, .rpms, Flatpaks & apks are of course available. It's quite big, regardless of package type, because yes.......like so many other apps now, it's Electron-based. Which means a stripped-back Chromium browser underneath; well over 100 MB for that bit, with the actual client a relatively small chunk built on top of that. But in line with my policy of making as much variety available as possible - "choice in all things" - here it is in my now-standard 'portable' format. It's running, with the usual modifications, in my Tahrpup64 without fuss. I haven't yet tried it in any other Pups, so it's possible the launcher may need tweaking in time. We shall see.
If anyone fancies trying it, you'll find it at MediaFire:-
https://www.mediafire.com/folder/ij9uxl ... /DeltaChat
As always:-
Download
Unzip
Place it anywhere you want (preferably, outside the 'save')
Click to fire it up
If a Menu entry is required, dive inside the ROXapp ( rt-clk -> 'Look inside...' ), and run the MenuAdd script. Read the MenuReadMe first.
See what y'all think. Enjoy.
Mike. 
