I've been using zstd compression on btrfs for a while now and it's excellent, most of my stuff is already compressed (movies, music) but my home directory (which is mostly comprised of text files) has shrunk greatly.
I switched from nginx to HAProxy for my internal reverse-proxying needs and it is excellent, the configuration is a bit more verbose but it handles every app (including WebSockets, weird RPC, cookies etc) with ease.
I use a mix of wmutils[0] and windowchef[1] and they're great, lots of little programs (some < 10 LoC) but also some cool stuff like mouse support and borders etc. I've only ever had trouble with JAVA apps which is a simple fix (_JAVA_AWT_WM_NONREPARENTING=1)
This is a screenshot of my Linux desktop [2], I use these on OpenBSD as well without too much issue.
>The year is 1997. You used to be a hacker, but now you have the phage. You made a deal: one hack, one dose. There’s nothing left to lose… except your life.
A nice introduction to BGP is Peter Hessler's BGP-spamd (https://bgp-spamd.net), which is a creative use of BGP for sync'ing lists of blacklisted mail servers.
I've got an OpenBSD router setup on an APU2 (https://www.pcengines.ch/apu2c4.htm). It's running dhcpd, unbound, dnscrypt-proxy, openvpn server and an openvpn client and the load averages are pretty low. Haven't bench-marked throughput properly yet as I'm still configuring PF properly.
I used these [0][1] repos as a starting point, I wrote a few helpers to update dynamic dns and a DNS ad blocklist for unbound. This replaced a pfSense install and I'm happy with it so far.
I'm using spotify through mopidy & mopidy-spotify, i can use ncmpcpp to play playlists and search spotify just like a local MPD server with a lot of music, it's excellent.
Currently I pay AUD$79 per month for the privilege of 1.4mbp/s down and 100kp/s up. My area is slated for the NBN, albiet HFC (using old coaxial) to commence building in 2019. Bloody bonza, mate.