APNG Disassembler 2.9Free
APNG Disassembler deconstructs a PNG file into a sequence of PNG frames. Command line: apngdis anim.png [name]. Decoding is implemented by parsing all chunks in the PNG file, remixing them into a sequence of static PNG images. The command-line version is available for all major OSes, there is also a GUI version for Windows. The C++ source code is available under zlib license.