Copernic has been around for years, (If memory serves correct I first used it on a Windows 95 Pc in the Nineties) its one of those programs like WinZip SiSoft Sandra etc, which are given away on computer magazine cover discs.
They make their money on other software they make, which hopefully you will purchase after finding out how good Copernic is.
Point to note, even with indexing enabled, Windows search is still a snail compared Copernic, and this is unlikely to change until Windows Vista is released.

Bill