| Call-Center-Software | 1 | 3 |
| Callback | 1 | 3 |
| Calligra | 1 | 1 |
| Callisto | 1 | 1 |
| Callnowbutton | 1 | 2 |
| Callrail | 1 | 2 |
| Calmar-Webmedia | 1 | 1 |
| Calmquist.Static-Server Project | 1 | 1 |
| Calogic | 2 | 5 |
| Caloris Planitia Technologies | 2 | 2 |
| Cals-Ed | 2 | 2 |
| Cam | 1 | 1 |
| Cam Development | 1 | 1 |
| Camaleo | 1 | 1 |
| Cambio Project | 1 | 1 |
| Cambium Networks | 4 | 8 |
| Cambiumnetworks | 15 | 49 |
| Cambridge Computer Corporation | 3 | 4 |
| Cambridge Enterprise | 1 | 1 |
| Camera Life | 1 | 7 |
| Cameron Mckay | 1 | 1 |
| Cameron Morland | 1 | 1 |
| Cameron Simpson | 1 | 1 |
| Caminova | 1 | 1 |
| Camouflage | 1 | 1 |
| Camp Project | 1 | 1 |
| Camp Style Project Line Project | 1 | 1 |
| Campaign Monitor Project | 1 | 1 |
| Campaign Url Builder Project | 1 | 1 |
| Campaignmonitor | 1 | 2 |
| Campbellsci | 5 | 5 |
| Campcodes | 7 | 138 |
| Campcodes Advanced Online Voting System Project | 1 | 3 |
| Campcodes Online Traffic Offense Management System Project | 1 | 3 |
| Campcodes Video Sharing Website Project | 1 | 4 |
| Camportail | 1 | 1 |
| Camptocamp | 1 | 1 |
| Campustv | 1 | 1 |
| Campusvirtualcomputrade | 1 | 3 |
| Campware.Org | 1 | 8 |
| Camsbiometrics | 1 | 1 |
| Camshot | 1 | 1 |
| Camtron | 2 | 10 |
| Camunda | 2 | 2 |
| Canaan | 1 | 1 |
| Canadapps | 1 | 1 |
| Canal44 | 1 | 1 |
| Canarylabs | 2 | 2 |
| Canarymail | 1 | 1 |
| Candidate-Application-Form Project | 1 | 1 |
| Candlepinproject | 1 | 4 |
| Candy Blast Project | 1 | 1 |
| Candy Girl Party Makeover Project | 1 | 1 |
| Candycaneapps | 1 | 1 |
| Candypress | 1 | 3 |
| Canebluem | 1 | 1 |
| Canna | 1 | 2 |
| Cannot | 1 | 3 |
| Canon | 299 | 1360 |
| Canon-Its | 1 | 1 |
| Canonical | 50 | 4196 |
| Cantata Project | 1 | 4 |
| Canteen Management System Project | 1 | 33 |
| Cantemo | 1 | 1 |
| Cantico | 1 | 2 |
| Canto | 2 | 9 |
| Canvasgfx | 1 | 4 |
| Canyon-Tech | 4 | 8 |
| Caolilinode Project | 1 | 1 |
| Cap-Strap Project | 1 | 1 |
| Capa Protect Project | 1 | 1 |
| Capasystems | 2 | 2 |
| Capensis | 1 | 2 |
| Capexweb Project | 1 | 1 |
| Capgemini | 1 | 1 |
| Caphyon | 1 | 3 |
| Capilano | 1 | 1 |
| Capital Request Forms | 1 | 1 |
| Capmon | 1 | 5 |
| Capnproto | 2 | 8 |
| Capstone-Engine | 1 | 2 |
| Capsule8 | 1 | 1 |
| Capsuletech | 1 | 1 |
| Captain-Slider Project | 1 | 1 |
| Captainform | 1 | 2 |
| Captaris | 1 | 2 |
| Captcha | 1 | 1 |
| Captcha Code Project | 1 | 1 |
| Captoz Project | 1 | 1 |
| Captura Project | 1 | 1 |
| Capturecctv | 2 | 2 |
| Capturix | 1 | 1 |
| Car Dealer / Auto Dealer Responsive Project | 1 | 1 |
| Car Dealer Project | 1 | 1 |
| Car Driving School Management System Project | 1 | 4 |
| Car Rental Management System Project | 1 | 15 |
| Car Rental Script Project | 1 | 8 |
| Car Rental System Project | 1 | 1 |
| Caravel Cms | 1 | 1 |
| Carbon Communities | 1 | 2 |
