My publisher Packt Publishing is about to release their 1000th title, which I think is pretty amazing. Them being altogether very pleasant people to work with I have no reservations pointing you to their site. If you sign up before September 30. there's even some surprise for you in store. You can read all about in their press release.
Being an author myself and having reviewed quite a number of the books published by them, I know it takes some genuine effort to produce a good book. Reaching your 1000th in about 8 years time is therefore a serious achievement. Conratulations!