Features:
Disk based text editing - supports editing of large 4GB+ files, minimum RAM used
Configurable tab options (multiple tab stop values, use spaces instead of tabs, etc.)
Tab/word wrap options based on file type/extension
Insert/overstrike mode with caret and status bar indication
Paragraph alignment
Left, center, right, fill (for fixed pitch fonts)
Reformat paragraph (cleans up and beautifies text)
Line spacing support for single, 1.5 and double spacing
Drag-and-drop editing
Join line(s) (with optional consolidation of whitespace)
Double click (optional Shift modifier) to highlight all occurrences of selected word
Line Change Indicator (optional) in margin
Saved changes indicated in green
Unsaved changes indicated in red
Configurable colors (set in editor theme)
Auto-indent wrapped lines
Support for extremely long lines (up to 20,000 characters before wrap is added)
Home key positions at first non-space, then first character
IntelliMouse scrolling support
Native Unicode / UTF-8 editing support
and more…

Operating System:
UltraEdit supports 64-bit file handling on both 32-bit and 64-bit Windows platforms (Windows 7 and later).

Home Page - https://www.ultraedit.com/