My bad. Yep, you are correct. I thought the GPL actually prevented you to sell compiled version of a GPL FOSS software (Outside of the original maintainer) but it seems it isn't compared to this one which force you to keep it free. There's also limitations on what you can remove so yep. Non-free. Seemed a bit Counter-intuitive to me in the first part. https://www.gnu.org/licenses/licenses.en.html

I should probably suggest the GNU Foundation to check this license to compare it, as I often see question of FUTO software license online.

Not in the usual sense, because you can still fully fork it, use it, modify it and redistribute it freely like a FOSS software.

You may use or modify the software only for non-commercial purposes such as personal use for research, experiment, and testing for the benefit of public knowledge, personal study, private entertainment, hobby projects, amateur pursuits, or religious observance, all without any anticipated commercial application. You may distribute the software or provide it to others only if you do so free of charge for non-commercial purposes.

The only limitation which make it non-free is :

Notwithstanding the above, you may not remove or obscure any functionality in the software related to payment to the Licensor in any copy you distribute to others.

I don't really understand if it "prevent you" to remove and/or prevent the modification of the donation to FUTO part of the code. Should not prevent you from adding yours on top of it (As in, adding a prompt as in "If you want to do donate to the project, you can donate to the original app owner (DONATE TO FUTO) or the maintainer of the fork you are using (DONATE TO THE MAINTAINER).) And the obvious limitation of making derivative work of it, non-free of course.

Also, they do reserve themselves rights to abrodge the license for those who abridge it, which i don't know how legally useful it may be, for license violations compared to protecting the GPL licenses from violations for example.

tl;dr : Seems FOSS to me, as long as :

• You don't try to make it non-free
• You don't remove the donation to FUTO part of the app

Actually, you were right. The issue for me is that the original k9-mail repo did also released the current beta thunderbird version (and i think, one with still the k9 branding if needed). I was trying to switch to it via that repo, and didn't noticed the thunderbird fork listed the in the repo. There's no changes, outside of the releases only being thunderbird branded outside of all the previous k9-mail ones. If you were on k-9 mail, and want to switch to it on Obtainium, manually install the new version and mugrate your settings to it. And once it's all done, remove the k9-mail repo from Obtainium, and add that thunderbird one.

~~Speaking off, I'm still having issues adding it, since it still get confused by the k9 original repo origin, even if i try to filter the pre-release .apk's with the thunderbird name.~~ My bad, still kept the k9-mail repo instead of the thunderbird fork.

Just not necessarily FOSS. The code is available and open to a certain limit. Not free however.

https://gitlab.futo.org/videostreaming/grayjay/-/blob/master/LICENSE.md

Yes.

It's a scraper. And, in theory, it shouldn't even cause any issues with ReVanced modified Youtube patches except if they need to be updated.

Just an ad. It even has mistakes, such as GPC support and auto-redirect to HTTPS.

If you believe Google is the most reliable, you can still use it in a private way via :

• Startpage

Startpage is a private search engine known for serving Google and Bing search results. One of Startpage's unique features is the Anonymous View, which puts forth efforts to standardize user activity to make it more difficult to be uniquely identified. The feature can be useful for hiding some network and browser properties.

https://www.startpage.com/

• SearxNG https://searxng.org/

SearXNG is an open-source, self-hostable, metasearch engine, aggregating the results of other search engines while not storing any information itself.

There's plenty of public instances too https://searx.space/

• Whoogle https://github.com/benbusby/whoogle-search

Get Google search results, but without any ads, JavaScript, AMP links, cookies, or IP address tracking. Easily deployable in one click as a Docker app, and customizable with a single config file.

Couple of public instances too. Basically SearxNG with ONLY google as a source. https://github.com/benbusby/whoogle-search#public-instances

Worthy actual open-source alternatives :

• YunoHost https://yunohost.org/ GPL3
• FreedomBox https://freedombox.org/ DFSG (Debian Project)
• Sandstorm https://sandstorm.org/ Apache V2
• CasaOS https://www.casaos.io/ Apache V2
• startOS https://start9.com/ MIT
• homelabOS https://homelabos.com/ MIT

However, I still use UmbrelOS as compared to all of those, It's the only one which seems to work well with my RPI4 and the connected drive with it, despite my modest Linux knowledge (Fedora and Arch on mobile user), and Umbrel being unsecure and retaining app versions compared to upstream.

Actually, it's far more limited than those options. The main advantage however, is the Manifest V3 support of it, meaning that such extension can be used on limited web browser that enforce it. Which isn't a lot.

Here's an actual FOSS cross-platform alternative with Windows, Mac and Linux (Need to be manually compiled and still experimental) https://screen-play.app https://gitlab.com/kelteseth/ScreenPlay