Aptana Studio is an open-source program that allows you to develop and test your entire web application. It aids in authoring of HTML, CSS, JavaScript, PHP and Ruby, it supports multiple protocols including FTP, SFTP, FTPS and Capistrano, you can set breakpoints, inspect variables and control execution... (
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The program works with the following extensions:
js,
xml,
css,
rels,
sdoc and
xevgenxml