Anjuta is a versatile Integrated Development Environment (IDE) for C and C++ in GNU/Linux. It has been written for GTK/GNOME, and features a number of advanced programming facilities. These include project management, application wizards, an onboard interactive debugger, and a powerful source editor with source browsing and syntax highlighting.

Put on hold (January 30th, 2008)

MathML IDE MathML Editor MathML Graph MathML Formula MathML on web pages

MathML EditorIt is an implementation of MathML editor intended to be used in Adobe Flash applications. This project use MathML Formula for Flash project to display the formula.

How to send/receive the mathML value from/to MathML Editor

More info you can get from http://www.learn-math.info.