Coinkite. Since they are not a regulated exchange, they don't have to be connected to anything KYC, just self-custodial solutions. I think the coldcard is the industry standard, at this point. The blockclock is also super-cool. Also, they maintain a few really useful websites:

BitcoinTreasuries.net - An aggregated list of public/private companies, governments, funds, ETFs and other entities that hold bitcoin.

Bitcoin.holiday - Track all important bitcoin dates in the Bitcoin Holiday Calendar, from the release of the white paper to the death of Mt. Gox and everything in between and since then.

BitcoinMemes.info - Bitcoin memes for every occasion. We've collected them all and aggregated them in one place. Browse, share, and contribute your own.

Bitcoin.review - Catch up on updates and Commentary on Bitcoin and related projects and products from around the community. (Also an awesome podcast!)

BitcoinBounties.org - A collection of bounties for #Bitcoin projects. The #Bitcoin bounty list for devs.

BitcoinBinary.org - A repository of Reproducible Build Proofs for Bitcoin Projects.