@ cc58 Yaourt was for a long time the only so called "AUR helper" that got any attention. Then it didn't see maintenance, people came up with more and more bugs and more and more feature requests so being the nature of open source other people started to fork it and even reprogram from the ground similar software.
Today
yaourt is officially unmaintained and there are quite a few pretty actively developed AUR helpers based on different programming languages.
Arch Wiki even has a dedicated article on AUR helpers.
Being there quite a few, there are just as much opinions about their coding style/security/implementation/features etc. about each. My very personal favorite is
pikaur;
trizen is also very recognized (
yay also comes to mind). Install instructions for most of these can be found on their respective repository sites. Then there's Obaruns
pacopts already preinstalled on Obarun :)
You can install any of these alongside each other without conflicts and see which one works best for you! Have fun :)