The editor's API is available, so that users can write their own plug-ins.

For files over 248 GB, it uses its Large File Controller to edit separate sections of the file.ĮmEditor is extensible via plug-ins written in C/ C++. For large files up to 248 GB, rather than opening them in memory, EmEditor 'spills them out' into disk space. The software searches for Unicode characters while opening Unicode file names.ĮmEditor is capable of working with very large files. EmEditor is able to use any encoding that Windows supports and converts between encodings with ease. These features include automatic encoding detection, byte order mark support, file reload with a different encoding, and detection of encoding errors. Features Unicode support ĮmEditor supports Unicode and provides tools for work with various character encodings.

The software has free trial and after that it downgrades to free version, which still can handle huge files and regex. It includes full Unicode support, 32-bit and 64-bit builds, syntax highlighting, find and replace with regular expressions, vertical selection editing, editing of large files (up to 248 GB or 2.1 billion lines), and is extensible via plugins and scripts. It was developed by Yutaka Emura of Emurasoft, Inc. EmEditor is a lightweight extensible commercial text editor for Microsoft Windows.

EmEditor Professional 22.5.2 free