Freeware Utilities you wondered how you lived without?

There are many utilities I have come across over the years - most I used for a bit and moved on because they just did not do the job or were cut out for it or something better came along. A few are very useful from a Developer or Administrator such as Sysinternals . But NirSoft does have a unique collection of freeware utilities that will please to most computer users across the board (a whole bunch with the source code), and range from Password recover utilities to Network Monitoring Utilities,  to Internet related utilities such as TurnFlash - a small utility that allows you to easily disable and enable the Macromedia Flash player component in Internet Explorer - which is a great help now as more and more web sites have close to full-screen advertisements. There is also a collection of links, that have other unique free software such as VNC, Etheral, etc. Check it out and let me know your favourite sites and tools are.