In the past few months I've been working on various fixes (and feature additions) for Xdebug. Most notable are the much improved code coverage and the new stack trace layout . All these changes made it into Xdebug 2.0.0RC1 which I just released through PECL. The source code is also avaible through the Xdebug website. Left before the final release are some build fixes for the debugclient and hopefully I can also bundle a real debugging client .