| Csaba Godor | 1 | 1 |
| Csandt | 1 | 1 |
| Csb-lamar | 1 | 1 |
| Cscms Project | 1 | 22 |
| Cscope | 1 | 5 |
| Csdn | 1 | 1 |
| Csdoom | 2 | 2 |
| Cse Bookstore Project | 1 | 1 |
| Csilvers | 1 | 2 |
| Cskaza | 1 | 7 |
| Csl Dualcom | 2 | 8 |
| Csliuwy | 1 | 1 |
| Csm | 1 | 47 |
| Csound | 1 | 6 |
| Csounds | 1 | 6 |
| Csp Mysql User Manager Project | 1 | 2 |
| Cspan | 1 | 1 |
| Csphere | 1 | 12 |
| Csrf Magic Project | 1 | 1 |
| Csrf-lite Project | 1 | 1 |
| Csrf-magic Project | 1 | 1 |
| Css-tricks | 1 | 1 |
| Css-what Project | 1 | 2 |
| Csshero | 1 | 1 |
| Cstech | 1 | 1 |
| Cstex | 1 | 2 |
| Cstr | 1 | 1 |
| Cstring Project | 1 | 1 |
| Csv+ Project | 1 | 1 |
| Csv-import-export Project | 1 | 1 |
| Csv-parse Project | 1 | 1 |
| Csv-sniffer Project | 1 | 1 |
| Csv2wpec-coupon Project | 1 | 1 |
| Csystems | 1 | 1 |
| Cszcms | 1 | 20 |
| Ctb Project | 1 | 1 |
| Ctdb Project | 1 | 1 |
| Cte | 1 | 1 |
| Ctekproducts | 5 | 5 |
| Ctera | 1 | 1 |
| Ctest7 Project | 1 | 1 |
| Ctfd | 2 | 2 |
| Cth | 1 | 1 |
| Cththemes | 4 | 13 |
| Ctihub | 1 | 1 |
| Ctl | 5 | 5 |
| Ctparental Project | 1 | 3 |
| Ctrip | 1 | 7 |
| Ctripcorp | 1 | 7 |
| Ctrlo | 1 | 5 |
| Cts Projects&software | 1 | 1 |
| Ctw Design | 1 | 1 |
| Cube-js | 2 | 2 |
| Cubecart | 1 | 41 |
| Cubecart Limited | 1 | 41 |
| Cubecoders | 1 | 2 |
| Cuberite | 1 | 1 |
| Cubettechnologies | 1 | 25 |
| Cubicfactory | 1 | 1 |
| Cubot | 2 | 41 |
| Cuciuci Project | 1 | 1 |
| Cue-sdk-node Project | 1 | 1 |
| Cujo | 2 | 9 |
| Cumin | 1 | 11 |
| Cumulative-distribution-function Project | 1 | 1 |
| Cumulusnetworks | 1 | 4 |
| Cuoftexas | 1 | 1 |
| Cuore | 1 | 1 |
| Cupidsystems | 2 | 2 |
| Cuppacms | 1 | 25 |
| Cups | 1 | 109 |
| Cups Easy (purchase & Inventory) Project | 1 | 43 |
| Cups Easy Project | 1 | 43 |
| Cups-pk-helper Project | 1 | 1 |
| Cure53 | 1 | 3 |
| Curecos | 1 | 1 |
| Curl | 2 | 193 |
| Curl Project | 1 | 130 |
| Curling Project | 1 | 1 |
| Curlrequest Project | 1 | 1 |
| Curly-bracket-parser Project | 1 | 1 |
| Currency Converter Script Project | 1 | 1 |
| Current Book Project | 1 | 1 |
| Current Search Links Project | 1 | 1 |
| Curriculum Evaluation System Project | 1 | 1 |
| Curses Project | 1 | 1 |
| Cursorarts | 1 | 1 |
| Curtis Farnham | 1 | 1 |
| Curtis Galloway | 1 | 3 |
| Curtis Hawthorne | 1 | 1 |
| Curtis Specialty Consulting | 1 | 1 |
| Curtiss Grymala | 1 | 1 |
| Curveball | 1 | 1 |
| Curveballjs | 1 | 1 |
| Curveriderhq | 1 | 12 |
| Curvycorners | 1 | 1 |
| Cusmin | 2 | 4 |
| Custom Banners Project | 1 | 2 |
| Custom Body Class Project | 1 | 2 |
| Custom Content Shortcode Project | 1 | 5 |
