In earlier editions of this book, before 2015, I maintained a list of credible, well-established canned hosting sites. I've stopped maintaining a complete list, as it's too easy for it to become out of date. The most important such sites — which are also the ones likely to be around for a long time — are discussed in the section called “Canned Hosting” anyway, and a more complete list is available at https://en.wikipedia.org/wiki/Comparison_of_open_source_software_hosting_facilities.