For learning or formal development of C#, there are only two best IDE for choice at present: either the 10+ GB size of Visual Studio or SharpDevelop with only 10+ MB file size. The latter is an open-source IDE with layout similar to IDEA for Java and high flexibility & extensibility, which lets a user find everything new and fresh. It never wants to be an IDE that tries to support everything as Eclipse. Instead, it just gives you an interface, and you can do all the rest by yourself.

As an intelligent PHP IDE and code editor from Denmark, phpDesigner is very fast, powerful and stable. That means not only is it suitable for PHP programming, but also can be used for other web developments primarily based on HTML, CSS and JavaScript. Its main design purpose is to speed up your programming, and make you feel easier in the whole process. However, for this very reason, it is more inclined to beginners.

ActiveState Komodo IDE is a cross-platform (Windows, Mac and Linux), universal IDE programming development tool supporting for multiple dynamic programming languages. It provides a powerful workspace for editing, debugging and testing programs and supports all mainstream programming languages (115+) including Python, PHP, Go, Perl, Tcl, Ruby, NodeJS, HTML, CSS, JavaScript, and so on.

Stylizer is a professional and popular visual CSS code editor on the market, developed by Skybound from Canada. Although you can choose to use full-featured IDE or some source code editors instead, the professional capabilities and features of Stylizer can help you write your CSS code better and faster.

All these license keys were tested (on 2019/10/06) working all right (and universal) for Sublime Text 2/3 (tested working: Build 2221; Build 3062~3211: 32-bit | 64-bit) on Windows, Mac (dmg) and Linux (32-bit | 64-bit) platforms. Just choose any one legal registration code below and paste it into your "Enter License" panel to complete the registration. Thanks for the help from Blog Cabeçada.