WampServer

It could be possible to write a little script to check it, see the deplister.exe we use in php src to create the release and snaps build. It lists the DLLs used by a given app or dll, run it against apache should do the trick (detect the VC9 crt usage).
Forum: WampServer English

Little notice about why we decided to drop VC6. The main reason is explained in the release note. It became impossible to maintain a reliable build using VC6, the floating point bug was the one too much, for example. About asking you to use an "unofficial" build of Apacehe, please keep in mind that there are no official builds of apache, they only provide something as convenience,
Forum: WampServer English