bibtexreftexwindows
I am currently using TexMaker on Windows to write my LaTeX documents. However, I would be very interested in a feature like RefTex (emacs module for bibtex) that would allow me to search directly in my bibtex files.
TexMaker just do auto-complete on the keys of the bibtex what is far less convenient.
Do you have an idea to help me ?
The website you point to is using MathJax to render the LaTeX. If you don't mind using a browser, then you can simply download MathJax, unpack the zip file, go into the test subfolder and open sample-dynamic.html in your browser. This is effectively an equation editor. You can make a custom web page to cater to your needs.
Note: As it is this requires you to hit the return key to render. That should be simple enough to alter. Grabbing the equation as a PNG could be a little more complex to achieve.
This list might be a good place to start. The third item on the list, KLatexFormula, looks promising.
Best Answer
Why don't you use emacs on windows? It works there.
If you are interested in working with bibtex files, there is also jabref which is a nice bibliography manager. It is fully cross-platform.