Jerboa has the same lead developers and is part of the same GitHub organization as the Lemmy server and web UI.
The logo for Lemmy itself is the head of a rodent, supposedly a lemming. Most instances use that logo or a variation of it in their web UI. Jerboa and other apps in turn tend to use a rodent in the logo.
If you have a rooted Android device or a jailbroken Kindle device, yes, you can still use Calibre DeDRM and KFX Input plugins on the kindle ebooks downloaded on them. It just takes a bit more setup with getting the key you need.
Unfortunately, DMCA takes an extreme stance when it comes to anti-circumvention. Even personal backup doesn’t have a strong legitimacy case under it, especially not when it comes to the tools that enable it.
Very related to this, LockpickRCM is a tool whose entire purpose is to extract your own Switch keys for the titles you own, and in turn is far more useful for people who want personal backups than those who are pirating the games. Still got a DMCA takedown two years ago, and though it never went to court it’s extremely unlikely any court would have ruled in their favor if it did.
I’m only aware of one RISC-V system where I can say the core count is there: the Milk-V Pioneer board and its 64-core SG2042 processor from two years ago. It’s comparable in price to a 64-core ARM Ampere CPU+motherboard (USD$1500 for the board), which seems somewhat reasonable when not considering the performance of each core. Hopefully the C930 core described in this article leads to more systems that aim for multi-core performance.
Most RISC-V development boards are only 4 cores or fewer, with just a few popping up in the last year with 8 cores and nothing higher besides the SG2042. The best single-core RISC-V performance so far is on the SiFive P550 but it’s only 4 cores and comes on a development board that costs USD$500 (plus another $150 for tariffs if shipping to the US). You could easily get a 12-core AMD CPU and motherboard combo for less than that.