EqualX LaTeX Equation Editor

Latest version is EqualX - 0.5.1

I am proud to announce the release of EqualX Equation Editor 0.5.1 for Ubuntu & Windows.
This release brings export functionality (GIF, PDF, PS, TeX, PNG, ROOT Formula, DVI) and Search options: Quick Find Bar and a Find & Replace dialog.
Cool features included:

highlight find results in the Equation Preview;
3 modes for Refreshing the Preview
customise the export commands
professional & customisable window layout
equation font is computed according to desktop DPI
reshaping the Symbols toolbar and Templates toolbar
cool looking About dialog

For more, see Features or check Screenshots gallery.

If you are ready, download EqualX for your system and try it out.

EqualX is a helpful graphical interface to LaTeX programs

EqualX gives you the power and beauty for writing equations TeX/LaTeX in a simple to use editor. If you want to write an entire document, presentation, article in TeX/LaTeX, you can try a full editor:

LyX (which has a full integrated equation editor).
Kile.