A large number of alternative word processors can be found through a search on the Web. They were a product from a previous time when WP and Word were the mainstream but not what writers wanted. They've come a long way but remain business focussed. There are even a few free ones out there that are quite good. I remember using one created by a software developer in the UK who really wanted to become a fiction writer and his creation was born from that.
For the most part these programs differ from Word in available formats. Other than specific screen writing software I continue to use Word, because I'm an IT professional with the skills to easily work with what I have. For screen writing, the compliment of integrated software from Write Brothers and such just can't be beat. Having functions like breakdown pages generate automatically is something I can't do without.