dhtcrawler2 VS Magnetico

Your question is a bit vague.. I suspect you're maybe looking for something akin to DHT scrapers? Look around there are a few existing projects for running DHT scrapers, nothing CLI but it should give you some ideas. e.g. Btdig links to this one https://github.com/btdigg-org/dhtcrawler2

well, you could run your own instance: https://github.com/btdigg-org/dhtcrawler2

Although I admit, that I would love to see a maintained DHT search solution (like magnetico or dhtcrawler2).

DHT Crawler: https://github.com/btdigg-org/dhtcrawler2 and the websites using it or similar (search for these websites online, some of them are chinese but they don't last very long because apparently showing links is a 'crime' now too). Searching for the file name should work in most cases, to find the same release look at file sizes. Admittedly most of the transfers will be dead but on the off chance some are actually still seeded/partially seeded (especially if fresh content), will allow you to complete your download and revitalize the swarms (Azureus aka BiglyBT now in SwarmMerging mode). If the files are partial on both transfers then this mode is your only choice until Bittorrentv2 is universally supported.

This is really neat. I'll need to check it out. A couple years ago I ran my own instance of Magnetico (https://github.com/boramalper/magnetico), but this project looks a lot more polished.

This is likely your best bet, but I'd recommend you use postgres over sqlite, this is however where development died so some features like search or stats aren't implemented while using pg as the db.

You can create decentralized bittorrent indexers though (see https://github.com/boramalper/magnetico as an example)! This means you can search for bittorrent files without having to rely on a centralized service (although building the index does require some time & storage space of course).

https://github.com/boramalper/magnetico

Someone else did this a while back, universe continues to exist.

I just get a rickroll gif on your link. Did you mean this project?

"Autonomous (self-hosted) BitTorrent DHT search engine suite."

https://github.com/boramalper/magnetico

Although I admit, that I would love to see a maintained DHT search solution (like magnetico or dhtcrawler2).

Yeah, you probably found it. Abandoned, yes, but not necessarily unfinished.

A magnet search is easy enough to self-host, I can provide you with instructions to self-host a clearnet magnet search engine over I2P in the meantime, but you can probably figure it out from this: https://github.com/boramalper/magnetico which is an easy to self-host DHT search engine.