What are some alternatives?
When comparing Everything and RecentX, you can also consider the following products
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
Ditto - Easy to use interface; Search and paste previous copy entries; Keep multiple computer's clipboards in sync; Data is encrypted when sent over the network; Accessed from tray icon or global hot key; Select entry by double click, enter key or drag drop…
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.
CopyQ - CopyQ : Clipboard Manager with Advanced Features.
Locate32 - Locate32 is software which can be used to find files from your harddrives and other locations.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).