WebStorm

Aptana Studio 3: The world’s most powerful open-source web development IDE just got better. Rebuilt from the ground-up. It's now much faster, customizable and includes new features to help you be more productive. Build web applications quickly and easily using the industry’s leading web application IDE. Aptana Studio harnesses the flexibility of Eclipse and focuses it into a powerful web development engine. Aids in authoring of HTML, CSS, JavaScript, PHP, and Ruby. Supports the latest HTML5 specifications. Includes information about the level of support for each element in the major web browsers. Support for one-shot as well as keep-synchronized setups. Multiple protocols including FTP, SFTP, FTPS and Capistrano. Ability to automatically publish your Ruby & Rails applications to hosting services such as Heroku and Engine Yard. Set breakpoints, inspect variables, control execution. The integrated Ruby & Rails and JavaScript debuggers help you squash those bugs.

Built from scratch, based on 20 years of experience developing IDEs. JetBrains Fleet uses the IntelliJ code-processing engine, with a distributed IDE architecture and a reimagined UI. We built Fleet to be a fast and lightweight text editor for when you need to quickly browse and edit your code. It starts up in an instant so you can begin working immediately, and it can easily transform into an IDE, with the IntelliJ code-processing engine running separately from the editor itself. Fleet inherits the things that developers love the most from IntelliJ-based IDEs – project and context aware code completion, navigation to definitions and usages, on-the-fly code quality checks, and quick-fixes. Fleet’s architecture is designed to support a range of configurations and workflows. You can simply run Fleet just on your machine, or move some of the processes elsewhere – for example by locating the code processing in the cloud.