The Web Interface to the Relational Registry (WIRR) allows for browsing the relational registry to retrieve data collections and services in the Virtual Observatory.
It aims at providing a powerful and user-friendly query interface making a knowledge of SQL/ADQL dispensable.
WIRR is capable of interoperating with other VO applications using the Simple Application Messaging Protocol (SAMP). Try the button(s) in the lower right side of the window.