There is a resource I found when searching for Karoro Cemetery transcripts which includes a map and some of the graves marked on the map. For the most part this only includes those in the oldest part of the cemetery, at the Northern end however it has a search function and the grave sites are colour coded, I think by transcribed and un-transcribed. Unfortunately my ancestors are buried in the other sections so it wasn't a useful resource for me but I hope it's helpful for you.
http://billiongraves.com/pages/cemeteries/Karoro-Cemetery/26...This one also has 359 entries - you can do a search or click on the link next to the search field to browse. Some entries have photographs and genealogical information included.
http://www.findagrave.com/cgi-bin/fg.cgi?page=cr&CRid=21...