Render mathematical formulas written in LaTeX without a local LaTeX engine installation.
Latte allows you to typeset LaTeX formulas without having a local LaTeX installation. It uses Web engines such as CodeCogs and Google Chart in order to acomplish that. Formulas can be easily dragged to other applications (e.g. Keynote, Pages) and save onto the local disk, making it easy to build a library of formulas.
Use LaTeX without large overhead of a TeX installation
WoodDMW
Pros
Easy to use if you already know LaTeX; you can (by burrowing into the .latte folder produced) find the PDF file produced and rename it something you can remember. It also saves the LaTeX source file.
Cons
I'd hoped the typeset 'swatch' would be drag & drop, so I could drag out the contents of the render window as a PDF. No: you have to save the file OR view the contents of the .latte folder. Default render size displayed is small, at least for me.