Web

Archive

archivebox
you-get: dumb downloader that scrapes the web

Torrent

tracker list
another tracker list

Feed

feedly: Feedly, free and safe download.
rsshub
pocket
osmosfeed: A web-based RSS reader running entirely from your GitHub repo.

Checker

nvchecker: nvchecker (short for new version checker) is for checking if a new version of some software has been released