This software development kit enables seamless creation and integration of software patches for all file types and sizes. It allows for easy patch applying and building within your own application program.

With DF SDK, developers can achieve various tasks including software updating/patching to ensure end-users have the latest version of software products, differential data backup for efficient storage, version control, and efficient control under various file versions.
DF SDK does not deal with any specific data structures, but rather works with files as binary data. This means it can work with any file type including executables, libraries, data files, and more. Developers can also use DF SDK to create compact byte-level differences for two binary files and reconstruct new versions of a file with an old file and the result difference file on the target machine.
DF SDK is available as a standard dynamic link library (DLL) that can be used with almost any Windows development language. Its simple API enables easy integration into existing products, ensuring high-grade performance and flexibility. The SDK also comes with sample programs, including examples that simplify patch creation and application.
DF SDK is highly versatile and can handle files, databases, or documents of any size as the focus is on the difference between versions. To get started, developers can download the demo version for free with flexible licensing options available. Overall, DF SDK is a reliable and effective software development kit that provides users with all the necessary tools to efficiently and effectively update software products.
Version 1.0.2: Improved df-file building and applying.