| cwdb | ClarisWorks Database |
| cwie | CodeWarrior Module Data |
| cwk | CattleMax Data |
| cwk | GC-Prevue Work Data |
| cwks | ClarisWorks Data |
| cwl | ClarisWorks Library Data |
| cwm | Common Warehouse Metamodel File |
| cwpb | CopyWrite Project Binder Data |
| cwr | WrapCandy Template |
| cww | Crossword Weaver Puzzle |
| cwx | Cakewalk Sonar Track Template |
| cwx | CodeWallet Pro 5 Form |
| cwz | PogoShell NES Emulator Data |
| cx5 | Clone Manager XML Data |
| cxa | ANSYS Fluent Solution Animation File |
| cxa | FMAT Listmode Data |
| cxb | Custody X Change CXB Data |
| cxc | Custody X Change Data |
| cxd | Hamamatsu SimplePCI Data |
| cxe | Common XML Envelope Data |
| cxf | Coordinates Export Format |
| cxf | Google Picasa Collage |
| cxf | SciFinder Chemical eXchange Format Data |
| cxh | Custody X Change CXH Data |
| cxi | Coherent X-ray Imaging Data |
| cxi | FMAT RAW Data |
| cxi | Nintendo 3DS Executable Image |
| cxk | WSCAD Connection List |
| cxl | Business Integrator Extract Schema |
| cxl | Tekla Structural Designer Neutral Data |
| cxm | QuadColor Color Correction Master Data |
| cxml | Silverlight PivotViewer XML Data |
| cxo | CXInsight Export Data |
| cxp | Crocodile Physics Simulation Data |
| cxp | FMAT Assay Data |
