Windows supports text files natively and also incorporates a search function, but it doesn't go out of its way to put the two together. MuseTips Text Filter is a compact, portable, and free tool that can quickly and thoroughly search text files. It searches as you type and displays matching terms in contrasting colors. It also offers autosuggestions, full support for regular expressions, multiple query modes, and extensive filtering.
At less than 500KB unzipped, Text Filter is certainly lightweight, and since it's fully portable, it runs from any location, including from a USB drive or other portable device. … Read more