Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
Numi App - Numi is a beautiful text calculator for Mac.
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
Calca - Calca is an advanced symbolic calculator for iOS, OS X, and Windows that's as easy to use as a text editor.
XYplorer - File Manager for Windows