I am looking for a solution of an Equation Editor to be added to my site. The equation editor should be open source, WYSIWYG (users should be able to type out Equations as if in MS Equation Editor or MathType), convert it to LaTeX, store in my database, retrieve as per the command and render in HTML, should be web based where all files reside on my server, and should facilitate editing in WYSIWYG mode at any stage. I wish to integrate with PHP on a Linux Platform. I would like images also be handled by the editor in EPS format.
I have tried many equation editors. These are either requiring knowledge of LaTeX or are online plugins (where the equation is converted to LaTeX on a third party server) or these are windows applications or desktop applications.
Can any one suggest how to proceed and which components to use in which order or share his/her knowledge with us or suggest a professional who can help me, may be, on payment basis. Any help would be highly appreciated.