Until now I managed to look into Webscarab, Webscarab-NG, IronWASP & Burp extender.
Unfortunately, except IronWASP, that refused to compile from the GIT source, none of the projects matched my criteria (Webscarab lacked the scanner, so does Webscarab-NG & Burp extender is indeed very nice, but not open source).
Do you know about any other open source projects that might work?