What is "editplus"

EditPlus is a text editor for the Microsoft Windows operating system, developed by Sangil Kim of ES-Computing. The editor contains tools for programmers, including syntax highlighting (and support for custom syntax files), file type conversions, line ending conversion (between Linux, Windows and Mac styles), regular expressions for search-and-replace, keystroke, spell check, full support for Unicode editing, customizable keyboard shortcuts, auto-completion, code folding, and more. Files can be browsed and edited in tabs, and an internal file browser is implemented in the software.

The "View in Browser" button is useful for editing HTML code and viewing the results immediately in the editor.