Ace is also used on GitHub https://github.com/blog/905-edit-like-an-ace
|Themes Made Simple
||The module is an improved version of the Theme Manager. It allows you to export and import theme packages consisting of: templates, stylesheets, content pages, module templates, global content blocks, user defined tags, module settings and any files.
||Gridder is an excellent tool for any web developer/ designer that wants to easily align, match and/or lay out websites.
If you need to be pixel perfect this can help... Simple, flexible!