Mass File Editor is a powerful text operations engine to process large number of files routinely. Automatically edits any number of files chosen by a user-supplied list, searches the plain text or regular expressions, maintains the data stack of what was found so far and allows composing new data from it. Files can be modified and renamed using all available data pieces. Full-featured text editor supports all codepages available on your computer including Unicode; text can be viewed and converted between codepages. Supports both Windows and Unix style end of line characters CR/LF and converts between them. System-wide drag-and-drop allows dragging text or whole files in and out. Unlimited undo-redo actions are provided.