Since i use the self-chat on Telegram a lot i've wished for exactly the same thing in the past as i'm planning on leaving the service, so far haven't found a right fit yet
This advice is not directly related to that, this is the same advice given by security-oriented organizations all over to compensate with people being people
The only correction i'd do to this message is to stop calling this person "Zuck", Mark Zuckerberg IS NOT YOUR FRIEND, stop calling these fucking bastards cutesy friend names or on a first name basis (like "Elon", Zuck" and others like this) , they DO NOT deserve them and they WANT to be called that
In case someone affiliated with the project is around, saw this feature request from last year to integrate Standard Ebooks as an additional source to Myne, an Android app to download and read Project Gutenberg ebooks on the device, but the dev failed to find a way to programatically get the books and closed the ticket, and i too failed to find an API or something similar when i checked. Is there such a thing? In theory you could do it with web scraping, but that's a tool of last resort in my opinion, and it's far better to have an API or a similar feature.
I hate that this happens, because he's a goddamned prophet when it comes to software freedom, the harms of proprietary dev models and related stuff, he's also in mastodon and regularly posts about international news i see no one else mention, but damn there's just no coming back from all this shit, how the hell would you share stuff he has said with all this gross stuff staining him? Goddammit, Stallman, you were supposed to be at least an OK person!
MANY of the old places of the internet are still active, heavily overshadowed by the current centralized feudal web of 5 websites all with screenshots of each other but STILL alive. Hell, even IRC is still running, and i understand so does Usenet!
Snikket is an attempt to solve the XMPP issues, or at least to reduce them, single all-in-one XMPP server distro and clients across platforms, and since it's self-hosted no one should get their hands on your data (in normal circumstances).
That said, the saying goes "Perfect is the enemy of Good". Just because a solution is not perfect doesn't make it unusable, any of those options you mention full of problems are a helluva better than FB Messenger or plain SMS for example. Depending on your threat model they might be more than enough.
I understood it was Google-only, great to be mistaken about it. Still, the app should also support that geojson importation format too, there shouldn't be a need for external tools, SPECIALLY since it's what Google Takeout gives you, this very much should be a feature of the app.
Since i use the self-chat on Telegram a lot i've wished for exactly the same thing in the past as i'm planning on leaving the service, so far haven't found a right fit yet