| csb | Corel Binary Script |
| csc | CHARTrunner Control Chart Style |
| csc | Corel Script |
| csc | CrystalControl2 Screen Data |
| csc | STK Calculation Scalar File |
| cscft | Colasoft Capsa Features Data |
| cscont | Colasoft Capsa Name Table |
| cscpflt | Colasoft Capsa Project Filter Data |
| cscpkt | Colasoft Capsa 5.0 Packet Data |
| cscpro | Colasoft Capsa Protocol Data |
| cscta | Colasoft Capsa Time Analyze Data |
| csctf | Colasoft Capsa Data |
| csd | Bitstream Fontware Data |
| csd | Manga Studio Scene Data |
| csd | Microsoft SharePoint Server 2007 Temporary Data |
| csd | Steam Client Game Backup Data |
| csdate | ClickStamper Date Stamp Data |
| csdb | CSPro Database |
| csdf | SPICE Common Simulation Data Format File |
| csdsig | Altaro Oops!Backup Data |
| cse | Web Research Document Package |
| cset | Cyber Security Evaluation Tool Data |
| csf | Cal3D Binary Skeleton Data |
| csf | SmartWare Data Format Definition |
| csf | VanDyke SecureCRT Script |
| csfdb | Open CASCADE 3D Model |
| csgen | ClickStamper Data |
| csh | CARA Script Engine Script |
| csh | CHARTrunner Histogram Style |
| csh | Cubase Waveform Audio Data |
| csi | CARE-S InfoWorks Water Quality Data |
| csi | Microsoft SharePoint Server 2007 Temporary Data |
| csj | BlackBerry Code Signing Data |
| csk | BlackBerry Code Signing Keys |
| csk | Copernic 2001 Skin Data |
