Web Service Discovery - Reality Check 2.0

In practice the ability to find the right Web service decides between an evaluation and use of that service on the one hand and the functionality being implemented anew on the other. This paper evaluates existing public portals for Web service discovery with respect to their characteristics and their acceptance by developers. For this, we distinguish different possible settings and use cases, and we evaluate how these are supported in practice. It turns out that only few of the publicly available Web service registries are growing in size and importance, with the use case best supported lying in the pre-programming phase.