I am looking for a list of publishers that are putting out seforim now a days. My reason is because I want to make a list of publishers in an effort to track down certain seforim. Many publishers (especially big ones) might own rights to seforim that they don't necessarily still publish for whatever reason. Or have them somewhere in their libraries, or know who owns the rights to them or actually copies. This comes from experience.
Specifically those that are publishing a large amount of seforim or have in their catalogs (or have the right to) many seforim. However really any publisher I am interested in knowing, even ones that publish a small amount of seforim (note that I said "specifically" the big ones, i.e. small also good.)
Two examples that I'll offer are Machon Yerushalayim and Mossad HaRav Kook.
Who else is there?
One may also include "projects" like the Frankel Rambam or Encyclopedia Talmudit where although they are putting out "one" type of seforim it's a set of seforim that is rather well-known and "big" in many regards.
My question boils down to mainly who are the big publishers today in seforim (comparable to the examples I give of Machon Yerushalayim and Mossad HaRav Kook. However even "less" than what they publish would also qualify (even significantly less) and certainly those that publish even more.