Utilities
7-Zip is open source archiving software. A must for de-compressing compressed archives. ie .zip, .tar, .rar etc
ASAP Utilities is a must for anyone whom uses Microsoft Excel. It's guaranteed that more than a few of the tools will be just what you've been looking for to fill the gaps in Excel.
CCleaner removes junk and tracking files to speed up your PC, save space and make you safer online. There are both free and paid versions.
Macecraft JV16 Powertools is a fantastic tool. It's not freeware, however, it's worth the few bucks they ask for.
Karen's Power Tools are free programs that make life with Windows a lot easier. Programs include Karen's Replicator, Directory Printer, Karen's Alarm and lot's more.
Do you need third party FREEWARE to help connect and transfer files from your iOS/Android device to your computer and visa versa? Then you need Syncios smartphone manager.
TeamViewer is proprietary computer software for remote control, desktop sharing, online gaming, web conferencing and file transfer between computers.