What Everything does well
Everything reads the NTFS master file table directly to build a list of names. Even with hundreds of thousands of files, name search is instant and the index is built in seconds. When you know the file name, little else comes close.
What Everything does not do
It does not index the text inside documents; its own FAQ says so plainly. So a search for a phrase that appears in last year's quote, but not in its file name, will not find it.
Where CHATDA fits
CHATDA opens PDFs, Word, Excel, PowerPoint and Hangul files, reads the body text and indexes it. On one PC it indexed 105,630 files, read the text of 74,157 documents, and the index came to 102.5 MB. The price is a slow first run — it really is reading inside every document.