| Cal3DViewer | 3.3 |
| Calibre | 3.7 |
| Calligra Suite | 2.8 |
| Camtasia (TechSmith) | 1.8 |
| Canada TurboTax (Intuit) | 2.1 |
| Canvas (ACD Systems) | 2.5 |
| Captivate (Adobe) | 2.3 |
| Capture One (Phase One) | 2.5 |
| CATIA (Dassault Systemes) | 3.1 |
| Celestia | 3.4 |
| Cenon (vhf interservice) | 3.0 |
| Character Animator (Adobe) | 1.7 |
| Chrome (Google) | 3.3 |
| Cinema 4D (Maxon) | 3.7 |
| Clementine | 3.1 |
| Clicker (Crick Software) | 3.3 |
| Client (DLL-Files) | 3.9 |
| Clip Studio Paint Pro (CELSYS) | 3.1 |
| CocoModX (Sven Janssen) | 3.0 |
| Code Blocks | 3.5 |
| Codec Packs (Attractor Mobile Software) | 2.9 |
| Cog | 1.7 |
| ColdFusion Builder (Adobe) | 2.0 |
| ColorStrokes (MacPhun) | 3.0 |
| Comic Life (plasq) | 3.8 |
| ConceptDraw DIAGRAM (CS Odessa) | 3.6 |
| ConceptDraw MINDMAP (CS Odessa) | 2.3 |
| Cool Reader | 3.3 |
| CorelCAD (Corel) | 1.8 |
| CorelDRAW Graphics Suite (Corel) | 2.7 |
| Creator (Roxio) | 3.1 |
| CryENGINE SDK (Crytek) | 2.7 |
| Crypt-DBConverter for Whatsapp (deraills) | 3.7 |
| Cubase (Steinberg) | 3.8 |
| Cube 2 Sauerbraten | 3.8 |
| Cyber Backup (Acronis) | 2.5 |
| Cyber Protect Home Office (Acronis) | 2.3 |