The SFL (Standard Function Library) is an open source portable function library for C/C++ programs. The SFL provides about 450 functions for compression, encryption, encoding, datatype conversion and formatting, dates, times, calendars, internet programming (MIME, CGI) and many more. The SFL is written in ANSI C and has been ported to MS-DOS, Windows, OS/2, Linux...

Truecrypt is an Open Source utility written in C that allows you to encrypt files or disk volumes on Windows or Linux and is very secure. It creates a virtual encrypted dist within a file and mounts it as a real disk. TrueCrypt is a software system for establishing and maintaining an on-the-fly-encrypted volume (data storage device). On-the-fly encryption means...

This is an automated software system written in C programming language for Bank Management which can handle accounts for customers. It uses files to handle the daily transactions, account management and user management. Its not a complete accounting software just like implemented in the banks, but still it can manage the accounts of the customers using the files...