Great software for searching

Everything

Locate files and folders by name instantly.
http://www.voidtools.com/

This is how search in Windows supposed to look like. Start typing and files are immediately filtered.

everything

Agent Ransack

Search inside files (including pdfs)
http://www.mythicsoft.com/agentransack/

Great tool when looking for “that” document which name you do not remember, but you know it contains “that phrase”.

agent_ransack