XMPP is an open standard for messaging. It supports federation, which allows you to use one server's service to talk to someone using a different service, and vice-versa.
SearX is a metasearch engine (searches other search engines). No searches logged.
Invidious is a lightweight YouTube front-end. Adblocking is built in, videos can be optionally proxied, and no account is needed.
One man made a funny domain, then some funny services, and finally a funny logo. This is Puffyan. No more, and no less. Don't look into it too much.
All services above are currently provided for free, and none of your data is sold or used for anything more than to provide the services aforementioned.
You can contact me in various ways for various reasons.
Fastest way is to join firstname.lastname@example.org and send a message there.
Otherwise just send a message to my personal email.
Send abuse notices/inquiries to abuse [at] puffyan.us and expect action or a response within three days.
No obligation to donate, but it helps. All money goes directly into my bank account, and then probably to server costs.
through Liberapay or through cryptocurrency.
You can also use my Vultr referral if you want to try running your own website/server. If you pay them $25, I'll get credited $25, and you'll get $25 of VPS.