DataNumen File Splitter(DFSP) is a free and best tool to split and join large files. It can also compare files and calculate check sum for files.
Note: DataNumen File Splitter is freeware. You can download, use and re-distribute it freely.
Support to split a large file into small files, based on the specified size limit.
Support join several small files into one large file.
Support to compare two files byte by byte, to check whether the two files are identical to each other.
Support to calculate the MD5 check sum of a file.