A Firefox browser extension for WYSIWYG MathML editing. Site includes installation instructions, usage examples, FAQ, a discussion forum and links to resources.
TeX to MathML translator: translates from Plain TeX and LaTeX into HTML including the equations in the form of embedded MathML. Windows/Intel (purchase) and Linux (free) platforms. Interactive demo.
An equation editor for MathML and LaTeX built on open Web standardsusing a SVG interface, implemented in ECMAScript. MathML, LaTeX and SVG exports. Open source.