iTeXMac is an editor, previewer and command-centre for TeX, LaTeX and ConTeXt projects. According to its main author it will not make coffee for you, but it can do pretty much anything else related to TeX.
The author is looking for help to finish version 2, with improvements in source–pdf synchronisation, and better modularity for easier maintenance and re-usability in other projects (syntax colouring, regular expression search & replace, …).