DBGp


Common DeBugGer Protocol as used by Xdebug and potentially other implementations. DBGp is a simple protocol for use with language tools and engines for the purpose of debugging applications.
The protocol provides a means of communication between a debugger engine and a debugger IDE.

Criticisms

DBGp has not received widespread adoption as a server protocol. Most implementations are client-side so that IDEs may be compatible specifically with Xdebug, which remains popular.
Criticisms have included:
A primary author of the DBGp specification has defended the design.