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Pro Frameworks support
Supports Symfony1, Symfony2 & Zend frameworks.
Pro Free, open source and cross-platform
NetBeans is a free, GPL-licensed IDE. It can can run on any computer with a Java virtual machine. If a computer has a Java virtual machine (JVM), Netbeans can run on it. Netbeans can therefore run on a variety of operating systems such as Windows, *nix, and Mac OS. Being open source means that developers can contribute changes to the code to have the IDE better serve them.
Pro PHPUnit support
PHPUnit is a testing framework. You can create test classes, run and see the code coverage directly from IDE interface.
Pro Multiple revision control system integration
Has built-in support for the most popular revision control systems
Pro Composer commands inside IDE
The most used composer commands can be done directly from IDE.
Pro ApiGen support
ApiGen allows automatically generating documentation from specifically formatted comments. It's easy to use, supports traits, allows fuzzy searching for classes and highlighting docblocks using Markdown.
Pro FTP/SFTP synchronization
Supports synchronization with projects stored remotely through FTP or SFTP.
Pro Accelerated HTML5 development support
Pro Supports community plugins
NetBeans can be extended beyond the basic tool that you get out of the box through community made custom plugins.
Pro Less and Sass Compiler support
Pro Supports Twig templates
NetBeans provides code completion and documentation for all Twig elements.
Pro Bower support
Pro Linux terminal inside IDE
You can run Linux terminal inside the IDE.
Pro Free and cross-platform
NetBeans is a free, GPL-licensed IDE. It can can run on any computer with a Java virtual machine. If a computer has a Java virtual machine (JVM), Netbeans can run on it. Netbeans can therefore run on a variety of operating systems such as Windows, *nix, and Mac OS.
Pro Best for PHP, HTML5 Apps Developemt
Pro ApiGen and PHPDoc support
Supports documentation generation through ApiGen and PHPDoc.
Pro Powerful debugging and performance optimization
Netbeans not only debugs your code, and points out errors but also gives you hints on which sections of your code could be further optimized.
Pro JMeter benchmarking tool support
Con Slows down occasionally
The Netbeans IDE is known to take a large memory as compared to other lighter IDE's available in the market. Slowdown can decrease productivity and frustrate programmers.