I'm currently trying (as a end user) a few so-called decentralized web applications.
Mastodon: https://joinmastodon.org/ | https://github.com/tootsuite/mastodon
SSB Patchwork: https://github.com/ssbc/patchwork
Pixelfed: https://pixelfed.org/ | https://github.com/pixelfed/pixelfed
Peertube: https://joinpeertube.org/ | https://github.com/Chocobozzz/PeerTube
Notabug: https://notabug.io/ | https://github.com/notabugio-archived/notabug-peer
(Notabug is built on GUN: https://github.com/amark/gun )
All of these seem to work incredibly well. The only problem is that they're still social networks where you're supposed to socialize. I'm not exactly used to that.