Miniflux is a great minimalist selfhosted web-based RSS readers. The page makes good use of standard HTML tags.
Fiery Feeds supports reading feeds from multiple services on iOS. Works with Miniflux by using Miniflux’s Fever API support.
Feed Generators
RssHub and Rss-Bridge generate feeds for websites that don’t expose feeds themselves. This is done through hand-written code for each supported site.
Rss-proxy uses heuristics and analyzes the underlying HTML structure of the page instead of relying on manually written code for each site. Hence, it can be a hit or miss.
rich-rss is a rewrite of Rss-proxy in a strongly typed language.