EverEdit

EverEdit is a text editor that's fast, lightweight, and scalable to documents of various types. It can serve as a code editor in different programming languages or as a hexadecimal editor.

It's a tool that's aimed at writing code, and includes code detection, compatibility with plugins and macros, regular expressions, matching key, and code folding.

It can work with HTML, PHP, C, assembly language, and CSS, among many other languages. You can also expand its functionalities with add-ons to the point that it can even act as a compiler.

It includes functions like drag and drop, autocomplete, and autocorrect, which are all a huge help for a programmer. It also includes tools like Unicode support, multiple selection, complete emmet support (ZenCoding), Markdown support, fragment support, support for large files, and Hex Editor.