QUIK is a more up-to-date version of QKSMS. Not the most important thing ever, since SMS/MMS are inherently insecure, but it's just good to always make sure you have up-to-date versions of things.
It depends on what exactly you're looking for in a messenger. If you are able to get people onto a specific platform, go with something like Signal, that's your best case scenario.
If you're unable to do that though, and need SMS/MMS, you have options. QUIK is an app I highly recommend for SMS and MMS. The big downside, however, is that RCS is seemingly exclusive to Google Messenger on Android. If you want to use RCS, you're kind of stuck unfortunately.
To minimize needing to use it, you could buy an old iPhone, jailbreak it, and try and set up Beeper Mini on an android device. That's what I do at least, which helps quite a bit. It's finicky and just not perfect, but it's better than just using SMS/MMS.
Hopefully this comment covers your use case and you're able to get some useful info out of it.
Use Xtra if on Android!
Mullvad is better imo, unless you need port forwarding. I'm currently using Proton since I pay for Unlimited for that encrypted drive space, and using their VPN saves me money since I just think of the payment as just for Proton Drive. This is a change I made just a few days ago though, for about a year I've paid for both Proton Unlimited and Mullvad, and I legitimately prefer Mullvad over Proton, it just made sense for me to switch money wise. Can't really go wrong between the two imo.
The update functionality for older versions to upgrade to the new version will be released a few weeks after the iso release of Linux Mint 22. It'll be an available upgrade in the Software Update Center application.
I use Privacy Friendly versions of Sudoku and Minesweeper on the F-Droid store. I also really enjoy Nonograms (aka Picross), and haven't found a good foss app for it, but the app "nonograms.com" has been a good experience for me. I paid like $5 for the ad free version and that's been it, nothing else.
I'm currently using searx.be with good results
This reading actually helped me understand calculus a bit better, thanks for sharing!
Fossify Gallery and Files are already up on F-Droid!
Can you possibly go more in depth or provide a source that goes more in depth on how to do this? Very interested in doing this
If you absolutely need functionality of some Windows only applications on Linux, it's a bit clunky, but a solution exists to use a VM to integrate the Windows apps into your Linux environment. It's called winapps, and I use it to run the latest version of Excel, which I do need for some things. Here's their GitHub: https://github.com/Fmstrat/winapps