Free code editing. Open source. Develop in any language. Lots of plugins and support.
Features include support for debugging, syntax highlighting, intelligent code completion, snippets, code refactoring, and embedded Git
PyCharm
A Python IDE for web development with intelligent code completion, on-the-fly error checking, quick-fixes, and more. Made for professional developers but great for beginners too.
EverSQL
An online SQL query optimizer for developers and database administrators. EverSQL will automatically optimize MySQL, MariaDB, and PostgreSQL queries saving you a lot of time.