Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft. It is used to develop computer programs for Microsoft Windows, as well as web sites, web applications and web services.
Aptana Studio is a complete web development environment that combines powerful authoring tools with a collection of online hosting and collaboration services that help you and your team do more. Includes support for PHP, CSS, FTP, and more...
OpenBeans is an open-source IDE distribution. It is not a fork of Apache NetBeans, but a distribution, in the same way Ubuntu is a distribution based on Debian. It packages the best there is in the Apache NetBeans* ecosystem, polishes it, fixes minor annoyances and serves them...This app doesn't have any features at the moment.
MaxBlox is a complete application development platform. The entire system is web-based and allows the ability to build applications that operate over the web. This is architected as a Platform as a Service (PaaS) system.