Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations. It is easily extensible and customizable via user-defined functions written in Octave’s own language, or using dynamically loaded modules written in C++, C, Fortran, or other languages.

It’s main features include:

- Instant deployment: The guided and intuitive installation adds a simple Javascript code to the web site pages and immediately begins gathering visitor statistics.

- A clean and user-friendly interface to present data and to aid in data analysis.

- Clear and concise graphics presenting important information in an easy-to-understand format.

- Security: Because security is a critical software element, phpMyVisites has maximum protection against intrusions and external attacks.

- Multiple Web Sites: Multiple web sites may be added. Each site will have precise and distinct statistics.

- Multi Users: Add an infinite number of users and manage permissions for each user (viewing and/or administration rights for certain sites).

- International: phpMyVisites is available in more than 30 languages.

What makes Piwik unique is:

- Modular plugin system: new features can be added and unnecessary stats can be removed.

- You own your data. Since Piwik is installed on your server, the data is stored in your own database and you can retrieve statistics using open APIs (access data in numerous formats: xml, json, php, csv)

- The user interface is fully customizable, you can drag and drop the widgets you want to display and create the reports you want.