Ecco is described as 'ECCO stands for online code editor and compiler. It's a programming IDE which supports many languages and is accessed through the browser. In other words, isn't necessary that the user has previously installed a programming environment to start to code' and is an website in the Development category. There are more than 25 alternatives to Ecco, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Self-Hosted solutions. The best alternative is Atom, which is both free and Open Source. Other great sites and apps similar to Ecco are Eclipse (Free, Open Source), Apache NetBeans (Free, Open Source), Qt Creator (Free, Open Source) and AWS Cloud9 (Paid).
AWS Cloud9 is a code editor and development environment built with browser technology yet with the power of a desktop IDE. It's available both as an online service and as a locally hosted platform. FEATURES - Full featured Linux terminal built in.
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...
PythonAnywhere is a Python development and hosting environment that displays in your web browser and runs on cloud servers. The servers are already set up with everything you need: hundreds of useful Python packages and web frameworks are supported out of the box.