| Canadapps | 1 | 1 |
| Canal44 | 1 | 1 |
| Canarylabs | 2 | 2 |
| Canarymail | 1 | 1 |
| Candidate-application-form Project | 1 | 1 |
| Candlepinproject | 1 | 5 |
| Candy Blast Project | 1 | 1 |
| Candy Girl Party Makeover Project | 1 | 1 |
| Candycaneapps | 1 | 1 |
| Candypress | 1 | 6 |
| Canebluem | 1 | 1 |
| Canna | 1 | 3 |
| Cannot | 1 | 3 |
| Canon | 261 | 992 |
| Canon It Solutions Inc. | 1 | 1 |
| Canon, Inc. | 2 | 6 |
| Canon-its | 1 | 1 |
| Canonical | 58 | 10785 |
| Canonical Ltd. | 4 | 72 |
| Cantata Project | 1 | 6 |
| Cantemo | 1 | 79 |
| Cantico | 1 | 10 |
| Canto | 2 | 9 |
| Canvasgfx | 1 | 10 |
| Canyon-tech | 4 | 8 |
| Caolilinode Project | 1 | 1 |
| Cap-strap Project | 1 | 1 |
| Capa Protect Project | 1 | 1 |
| Capasystems | 2 | 2 |
| Caphyon | 1 | 3 |
| Capilano | 1 | 1 |
| Capital Request Forms | 1 | 1 |
| Capmon | 1 | 82 |
| Capnproto | 1 | 7 |
| Capnsquarepants | 1 | 1 |
| Capstone-engine | 1 | 2 |
| Capsule Technologies | 1 | 1 |
| Capsule8 | 1 | 1 |
| Capsuletech | 2 | 2 |
| Captain-slider Project | 1 | 1 |
| Captainform | 1 | 2 |
| Captaris | 1 | 1 |
| Captcha | 1 | 2 |
| Captcha Code Project | 1 | 2 |
| Captoz Project | 1 | 1 |
| Capturecctv | 4 | 4 |
| Capturix | 1 | 1 |
| Car Dealer / Auto Dealer Responsive Project | 1 | 1 |
| Car Driving School Management System Project | 1 | 4 |
| Car Rental Management System Project | 1 | 16 |
| Car Rental Script Project | 1 | 15 |
| Car Rental System Project | 1 | 2 |
| Caravel Cms | 1 | 1 |
| Carbon Communities | 1 | 4 |
| Carbonblack | 2 | 5 |
| Carboncommunities | 1 | 4 |
| Carbonexchangecointoken Project | 1 | 1 |
| Carbonite | 1 | 1 |
| Carbonize | 1 | 2 |
| Carceresbe Project | 1 | 1 |
| Cardfactory Project | 1 | 1 |
| Cardgate | 1 | 2 |
| Cardinal Cms Project | 1 | 3 |
| Cardo Systems | 1 | 1 |
| Cardosystems | 2 | 2 |
| Cardozatechnologies | 1 | 3 |
| Cardway | 1 | 1 |
| Care 2002 | 1 | 2 |
| Care Clone Project | 1 | 1 |
| Care2x | 4 | 6 |
| Carefusion | 1 | 6 |
| Carel | 7 | 14 |
| Carello | 1 | 8 |
| Carestream | 2 | 2 |
| Caret | 1 | 3 |
| Caretakerr-api Project | 1 | 1 |
| Careteditor | 1 | 1 |
| Carey Briggs | 1 | 1 |
| Carey Internet Service | 1 | 1 |
| Carinal Tien Hospital | 1 | 1 |
| Carlos Carvalhar | 1 | 3 |
| Carlos Desseno | 1 | 4 |
| Carlos Eduardo Sotelo Pinto | 1 | 1 |
| Carlos Sanchez Valle | 1 | 2 |
| Carlos A Sanz | 1 | 1 |
| Carlosgavazzi | 6 | 20 |
| Carlosmoreirapt | 1 | 2 |
| Carltongibson | 1 | 1 |
| Carnegie Mellon University | 3 | 20 |
| Caroline | 1 | 3 |
| Caronc | 1 | 1 |
| Carrcommunications | 2 | 14 |
| Carrier | 22 | 154 |
| Carrierenterprise | 1 | 1 |
| Carrierwave Project | 1 | 4 |
| Carrierwaveuploader | 1 | 4 |
| Carrot Cartoon Book Coin Project | 1 | 1 |
| Cars Portal | 1 | 1 |
| Cars-seller-auto-classifieds-script Project | 1 | 1 |
| Carscripts | 1 | 1 |
