What is Free Software Free Software is software for which the source code to the software is available to everyone, everyone has the right to copy and use the software and to modify it as they wish.
Computer software is written by programmers in what are called high-level languages.
These are languages such as C, Pascal, Cobol, etc. which are intelligible to a human computer programmer. Software in this form is known as source code. A computer cannot understand the program in this form, so before the program can be used, it must be translated into a form which the computer can understand. This form is known as the binary format of the program. The program in binary format is intelligible directly to the computer, but is virtually incomprehensible to a human reader.