If you’re willing to donate bandwidth, I suggest I2P or a public SyncThing node. My server chews through a terabyte of bandwidth helping people securely access their files. I also run Tor’s Snowflake proxy which helps users reach the network.

I2P is Java. SyncThing and Snowflake are written in Go which means you can’t pull off typical memory corruption attacks in these relatively safe languages, and it’s fairly easy to run them in a container.

I don’t feel like it makes a huge difference for me and I run quite a few servers. It’s mainly the cooling costs in the summer months that run up the bill.

BOINC is great. In its day, you could get an enormous amount of computing power on a shoestring budget thanks to volunteers. It also helped the volunteers feel like they were more a part of something, because they were! I used to have a small server farm crunching numbers for science.

Unfortunately, the landscape has changed. Some projects are still around, but many of the big players have left. Computing power is a lot more accessible now, and the main limitation is time spent analyzing the data rather than the computation itself. Cloud computing can make just about any computation happen fast for a reasonable price without having to own all of that hardware. GPUs have exploded in computation capacity. Just, a lot of factors came together where the need isn’t as great.

With that said, I still run it on one mini PC, but the payoff for having to write your application in a distributed fashion doesn’t have the return on investment that it used to.

Same I just throw it in a desk at work. It’s encrypted anyway.

Arm:

Somehow, the kernel has been loaded and we have transferred control into it.

I don’t think that project is maintained anymore, but at one point in time it used to add patches that were part of the Kernel Self Protection project. I believe those changes are now largely part of the mainline kernel.

I.e. it’s not different anymore.

EDIT: Looks like it’s still maintained.