These are the packages that I maintain in the Arch Linux User Repository (AUR). The top-level directory has a folder for each package, with the folder name being the same as the package name in the AUR. The folder contents contain the package build files (PKGBUILD, etc) that are in the AUR and necessary for building the package via makepkg.
If you think you can improve a package (such as by tweaking the build scripts or updating the version) feel free to make the fix and submit a pull request.