If you want English-language versions of Steiner’s works there are two very good ones available. The first is one that has served the Steiner critical community well over the years and is quite well known, the Rudolf Steiner Archive, or RSA for short. Much less well known is SteinerChat, a free online AI service.

Both RSA and SteinerChat are searchable, but it takes a long time to get used to the RSA search and to navigate the labyrinthine Steiner corpus there. The new kid on the block, SteinerChat, is an absolute doddle to search and the output is impressive. Both are free to use, but you can donate to support their efforts. You don’t need an account to use RSA, but you will need to sign up for SteinerChat. I haven’t received any spam since signing up a month or so ago.