Microsoft Visual Studio, Apache NetBeans, PhpStorm, Eclipse, Xcode, Microsoft Small Basic, Qt Creator, NVU, VisualNEO Win, React Studio, WeBuilder, Aptana Studio, CSSEdit, Namo Webeditor, Rapid PHP, PHPEdit, ChrunchApp, Drubuntu, NuSphere PhpEd, Padre are some alternatives to Zend Studio.