Dev-PHP IDE is described as 'Dev-PHP is a well-featured integrated development environment (IDE). You'll be able to create scripts and applications using the PHP scripting language and the PHP-GTK library (both included in the "PHP Package")' and is an app in the Development category. There are more than 25 alternatives to Dev-PHP IDE for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and iPad. The best alternative is Eclipse, which is both free and Open Source. Other great apps like Dev-PHP IDE are PhpStorm (Paid), Pinegrow Web Editor (Paid), CodeLobster PHP Edition (Freemium) and Hadron (Free).
Pinegrow is a Mac, Windows and Linux web editor that lets you build responsive websites faster with live multi-page editing, CSS & SASS styling, CSS Grid editor and smart components for Bootstrap, Foundation and WordPress.
A powerful, feature packed, fully configurable IDE specifically designed for Windows developers. Zeus is a fast and lean, fully scriptable, keyboard centric editor packed full of programmer specific features making it one of the best programmer's editor available.