Soluto

Soluto bills itself as an "Anti-Frustration Software", and it's not hard to see why—it tracks all the applications in your system boot process, and tells you exactly which ones are slowing you down. Once you've installed the software and rebooted your PC, Soluto springs into action, tracking every single process that runs during the boot process, and then allows you to easily drill down into the list of processes to see exact times for each one.