| File Extension: | XCS |
| File Type Description: | BuzzLetter Encrypted Stationery Template |
| File Type Developer: | DynaSend |
| Primary Associated Software: | BuzzLetter |
| Primary Software Developer: | DynaSend |
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BuzzLetter Encrypted Stationery Template files are the most popular type of files to carry the XCS file extension, originally developed by DynaSend for BuzzLetter. Website visitor analysis indicates that XCS files are commonly found on Windows 10 user machines, and are most popular in United States. Google Chrome is their primary internet browser for the bulk of these users.
 | BuzzLetter by DynaSend |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .XCZ | DynaSend | Compressed Files | BuzzLetter Encrypted Stationery Templates |
| .PKCS7 | Open Source | Encrypted Files | Cryptographic Message Syntax Standard |
| .RPZ | SAP | Encrypted Files | Crystal Reports Encrypted And Zipped Report File |
| .KRY | Herolab | Uncommon Files | Herolab Krypten |
| .JSN | JetSoft Co. | Encrypted Files | Shield Now Shield File |
| .CFOG | Open Source | Encrypted Files | Cloudfogger Encrypted Data |
| .ENC | Smith Micro Software | Encoded Files | Encoded Data File |
| .HTMLX | Unknown Developer | Encrypted Files | Encrypted HTML File |
| .CRYSIS | Unknown Developer | Encrypted Files | CrySiS Ransomware Encrypted File |
| .RPGMVP | ENTERBRAIN, INC. | Encrypted Files | RPG Maker MV Encrypted PNG Image |
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