Yaws is a WWW technology with capabilities similar to the combination of Apache with PHP and a database. Yaws runs faster, with smaller footprint, higher scalability, and higher reliability. Subjectively speaking, it uses a more beautiful technique to generate dynamic pages than other similar technologies.
REPOS stands for Repository of Erlang-Projects.Org Software selection. It is a collection of major ready-to-use Erlang software. Erlang REPOS is distributed as a CDROM image (ISO). You can use every program included in the REPOS environment either directly from the CDROM, from your hard drive, or from a USB key.