Decentralization Central is a hub for decentralized apps and services. They are organizaed and presented in useful categories. Each one has an info page with a description of the technology, the categories it is organized under on this site, the platforms it supports, useful links, and most imporantly, 3 critical areas of decentralization:

It also bears mentioning that "decentralization" does NOT in any way REQURIE a blockchain. There are many ways to decentralize apps and services. Blockchains are just ONE of them. The services on this site are all decentralized with or without a blockchain OR they are supporting services, though they, themselves may not be decentralized, they provide support for decentralization. This site, for example, is a classical, centralized website, but it supports decentralization.