Single File System (SFS) provides an easy way to work with multiple files and folders stored as a part of a single file with advanced compression and encryption functionality. This solution encapsulates small but powerful file system within a single file. The mechanism of Single File System includes some advanced features of FAT and NTFS file systems and is specially optimized to achieve high performance.
Features

Compression on-the–fly with flexible algorithms: from fast to maximum.
Transparent strong encryption provided by Rijndael algorithm, the AES winner.
Full compatibility with standard Borland and WinAPI functions operating with files and folders, such as CreateDir, ForceDirectories, FileExists, FindFirst, etc.
TFileStream interface to deal with files transparently stored within a single file.
Recovering physically damaged files.
Progress indication for potentially slow operations.
Huge files support: more than 2 GB even on FAT-32.
Running applications stored in SFS file.
Loading DLLs stored in SFS file.
Self-extracting support (SFX) for SFS file.

SFS use cases:
File of custom format. Typically if the application uses different data like texts, images, binary data, there should be a plenty of files for each type of data. With SFS you get a unique ability to store all these files as a parts of a single file with minimum changes in your application code. Additionally SFS gives you advanced compression and encryption capabilities, so you can easily decrease the size of application data and protect it from unauthorized access.

Archiver. SFS provides the user a simple possibility to create, manage, protect and control archive files in user application.

Backup software. With SFS the user gets an easy way to perform secure, hard compressed or fast backups in user application.

Multimedia application. SFS help you essentially