FNIS was the only option in town for awhile, but Nemesis seems to be taking over and expanding on the possibilities. Just make sure that the mods that YOU want to use work with whichever you decide on. However, don’t assume that just because a mod description says that it requires FNIS that it won’t work with Nemesis; often that “requirement” was added when the only option was FNIS. So check around and see if others have been able to make it work, by reading the posts section on the mod page and searching Google/Reddit. (For those curious – I currently use Nemesis.)
These range from general gameplay to combat, to a few other random things. I am an animation newbie myself, so this section will surely expand as I learn and try more. Keep in mind that if you are so inclined, there is a whole crazy, kinky, sexy world of animations out there for you to explore.
Please remember to endorse any mods you download and like, and if you appreciate all the hard work that goes into creating a mod, consider giving kudos to the author on Nexus as well (the Give Kudos button can be found on the user’s page).