| C-3.Co.Jp | 1 | 2 |
| C-Ares | 1 | 5 |
| C-Ares Project | 1 | 9 |
| C-Blosc2 Project | 1 | 7 |
| C-Board Moyuku Project | 1 | 2 |
| C-Data Onu4Ferw Project | 1 | 1 |
| C-First | 28 | 56 |
| C-Http Project | 1 | 1 |
| C-Icap Project | 1 | 2 |
| C-Mor | 1 | 1 |
| C-News.Fr | 1 | 3 |
| C-Note | 1 | 1 |
| C-Sam | 1 | 1 |
| C.P.Sub Project | 1 | 2 |
| C/C++ Advanced Lint Project | 1 | 1 |
| C2Ae | 1 | 1 |
| C2Enterprise | 1 | 1 |
| C2Fo | 2 | 2 |
| C2Net | 1 | 1 |
| C3 Token Project | 1 | 1 |
| C3-Ilex | 1 | 4 |
| C4B | 1 | 1 |
| C61 | 1 | 1 |
| C97 | 1 | 3 |
| C97Net | 1 | 1 |
| Ca | 107 | 290 |
| Ca Lottery Results Project | 1 | 1 |
| Ca Technologies | 1 | 1 |
| Ca-Ret | 1 | 1 |
| Ca3De | 1 | 2 |
| Cab Booking Script Project | 1 | 2 |
| Cabextract | 1 | 4 |
| Cabextract Project | 1 | 9 |
| Cable-Modems | 1 | 1 |
| Cabletron | 2 | 2 |
| Cabron Connector | 1 | 1 |
| Cabsoftware | 1 | 1 |
| Cacagoo | 1 | 2 |
| Cacert | 1 | 1 |
| Cache Images Project | 1 | 1 |
| Cache Project | 1 | 2 |
| Cached-Path-Relative Project | 1 | 2 |
| Cacheflow | 1 | 1 |
| Cacheguard | 1 | 1 |
| Cacti | 2 | 131 |
| Cactus Software | 1 | 2 |
| Cactushop | 1 | 1 |
| Cactusoft | 3 | 8 |
| Cactusthemes | 1 | 2 |
| Cactusvpn | 1 | 2 |
| Caddy Project | 1 | 1 |
| Caddyserver | 1 | 7 |
| Cadenix | 1 | 1 |
| Cadpage | 1 | 1 |
| Cadsoft | 1 | 1 |
| Caehealthcare | 1 | 1 |
| Cafe Billing System Project | 1 | 1 |
| Cafeengine | 1 | 3 |
| Cafelog | 2 | 5 |
| Cafuego | 1 | 4 |
| Cagewebdesign | 1 | 1 |
| Cagewebdev | 2 | 4 |
| Cagintranetworks | 1 | 2 |
| Cahier De Textes | 1 | 4 |
| Cainor | 1 | 1 |
| Cairographics | 1 | 10 |
| Cakefoundation | 1 | 3 |
| Cakephp | 1 | 9 |
| Cal | 1 | 2 |
| Calabrio | 1 | 3 |
| Calacode | 3 | 7 |
| Calamares | 1 | 2 |
| Calamine Project | 1 | 1 |
| Calamp | 3 | 3 |
| Calarepasoftware | 1 | 1 |
| Calculatorsworld | 1 | 1 |
| Caldera | 16 | 127 |
| Calderaforms | 1 | 2 |
| Calderalabs | 1 | 1 |
| Cale Dunlap | 1 | 2 |
| Calendar Event Management System Project | 1 | 2 |
| Calendar Plugin Project | 1 | 1 |
| Calendar01 Project | 1 | 3 |
| Calendar02 Project | 1 | 2 |
| Calendarform01 Project | 1 | 1 |
| Calendarix | 1 | 1 |
| Calendarscript | 1 | 3 |
| Calendarscripts | 1 | 1 |
| Calendarscripts.Com | 1 | 2 |
| Calendarxp | 3 | 3 |
| Calender Base Project | 1 | 1 |
| Calenfretts | 1 | 1 |
| Calibre-Ebook | 1 | 10 |
| Calife | 1 | 1 |
| Calimero.Cms | 1 | 2 |
| Calipso Project | 1 | 1 |
| Calisto | 1 | 1 |
| Call Center Software | 1 | 1 |
| Call Project | 1 | 1 |
| Call&Book Mobile Bar Project | 1 | 1 |
