| Carsen Klock | 1 | 2 |
| Carson-saint | 1 | 4 |
| Carspot Project | 1 | 1 |
| Carsten Haitzler | 1 | 23 |
| Carsten Wulff | 1 | 1 |
| Cart-app | 1 | 1 |
| Cart66 | 1 | 2 |
| Cartflows | 1 | 5 |
| Cartflowswp | 1 | 2 |
| Cartit | 1 | 1 |
| Cartkeeper | 1 | 3 |
| Cartoken Project | 1 | 1 |
| Cartpauj | 2 | 6 |
| Carts.guru | 1 | 1 |
| Cartwiz | 1 | 1 |
| Casap Automated Enrollment System Project | 1 | 11 |
| Casbin | 1 | 5 |
| Cascadesoft | 1 | 2 |
| Caseproof | 2 | 5 |
| Cashbackcomparisonscript | 1 | 1 |
| Cashbackmintable Project | 1 | 1 |
| Cashtomer Project | 1 | 1 |
| Casinogame | 1 | 1 |
| Casinosoft | 1 | 2 |
| Casio | 1 | 1 |
| Casperjs | 1 | 1 |
| Cassiopeia | 1 | 1 |
| Cassproject | 3 | 3 |
| Castel | 2 | 8 |
| Castelle | 1 | 1 |
| Castillobueno | 1 | 1 |
| Castillocentral | 1 | 2 |
| Castlamp | 1 | 2 |
| Castle Rock | 1 | 5 |
| Castle Rock Computing | 1 | 1 |
| Castlehill | 1 | 1 |
| Castlenet | 8 | 8 |
| Castlerock | 3 | 11 |
| Castor | 2 | 3 |
| Castor Project | 1 | 2 |
| Castro Xl | 1 | 1 |
| Cat | 1 | 22 |
| Cat Runner | 1 | 1 |
| Cat Soft | 1 | 31 |
| Catalin Florian Radut | 1 | 2 |
| Catalooksupport | 1 | 1 |
| Catalyst | 1 | 99 |
| Catalyst-plugin-static-simple Project | 1 | 1 |
| Catapultsoftware | 1 | 2 |
| Catapultthemes | 1 | 2 |
| Catb | 1 | 4 |
| Catbot Project | 1 | 1 |
| Catch Themes Demo Import | 1 | 3 |
| Catchethq | 1 | 3 |
| Catchplugins | 11 | 15 |
| Catchthemes | 17 | 21 |
| Catdoc | 1 | 5 |
| Category Specific Rss Feed Subscription | 1 | 1 |
| Category Tokens Project | 1 | 1 |
| Catfish Project | 1 | 4 |
| Catfish-cms | 2 | 9 |
| Catimg Project | 1 | 1 |
| Catly Translate Project | 1 | 1 |
| Cattadoc | 1 | 1 |
| Catviz | 1 | 3 |
| Catzsoft | 1 | 4 |
| Caucho | 1 | 28 |
| Caucho Technology | 1 | 11 |
| Caudium | 1 | 1 |
| Cauldron | 2 | 2 |
| Cauldrondevelopment | 1 | 1 |
| Caupo | 2 | 4 |
| Caupo.net | 3 | 5 |
| Causefx | 1 | 7 |
| Cavecoin Project | 1 | 1 |
| Cavium | 5 | 5 |
| Cavoxcms | 1 | 1 |
| Cayin Technology | 6 | 6 |
| Cayintech | 14 | 126 |
| Cayman | 2 | 2 |
| Cayugalakenationalbank | 1 | 1 |
| Cb - Calciatori Brutti Project | 1 | 1 |
| Cbads | 1 | 2 |
| Cbauthority | 1 | 1 |
| Cbc | 1 | 1 |
| Cbeust | 1 | 1 |
| Cbi Referral Manager Project | 1 | 1 |
| Cbioportal Project | 1 | 1 |
| Cbox Project | 1 | 1 |
| Cbr Token Project | 1 | 1 |
| Cbsms | 1 | 2 |
| Cbutlerjr | 1 | 1 |
| Cc | 1 | 1 |
| Cc-tweaked | 1 | 1 |
| Ccash Project | 1 | 1 |
| Ccbank | 1 | 1 |
| Cccounter | 1 | 1 |
| Cccp-common-clan-portal-pasterbin | 1 | 1 |
| Cccsoftware | 1 | 1 |
| Cce-interact | 1 | 13 |
