Solid File System™ (SolFS) - Single - File Virtual File System for Delphi and C++Builder

Solid File System (SolFS) is an implementation of file system in a single storage (physical file, database record or just memory block). It operates much like "real" file systems do, i.e. it operates with pages and keeps hierarchical directories structure inside. Page mode allows SolFS quickly and efficiently manage (create/write/delete) files and folders. At the same time SolFS is not resource-hungry - it allocates physical disk space only when it is needed and can automatically reduce file size when the space is not needed anymore.

Solid File System can be statically linked to your Delphi or C++Builder application so you don't need to carry external DLLs with your program.

If you are choosing which single-file virtual file system to choose, please see the table below:

Feature	Solid File System (SolFS™)	AidAim Single File System
Supported platforms	Windows, .NET, Unix, Windows CE, PalmOS, other	Windows (VCL only)
File and Storage Encryption	AES 256 + SHA 256 User-defined algorithms supported	AES 128
Data integrity	Journalling support CheckAndRepair operation which recovers all available data	Limited data recovery
Physical media	File system any storage (memory, DB, resource) using callback mode	File system memory
Storage space defragmentation and size optimization	Automatic (optional) Manual defragmentation	Limited reduction of storage space (no optimizaton or defragmentation)
File Compression	ZLib	ZLib, BZIP, PPM
Thread safety	Multiple streams in single storage can be accessed from differnet threads
Multiple streams per file
Symbolic links
Fixed-sized storages
Storage metadata
Source-code availability	ANSI C source code for all platforms is available as a separate license	VCL-only Pascal source code is available at a special price