HashMyFiles - HashMyFiles is small utility that allows you to calculate the MD5 and SHA1 hashes of one or more files in your system.
Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
RapidCRC Unicode - RapidCRC is an open source CRC/MD5/SHA hashing program.
GSplit - GSplit is a free file splitter that splits any file into smaller files called pieces. Lots of customization options, attractive and easy-to-use interface.
OpenHashTab - OpenHashTab is a shell extension for conveniently calculating and checking file hashes from file properties.
Batch File Split & Join - Split and merge multiple text or binary files in either character, line, or byte modes. When splitting files, you can split on certain text or binary separator; target given number of parts; or target specific part size. Join files on lines/bytes.