Here is a list of the best websites* which offer you free services

TRAVEL

Babel Fish – Free translation service
Seat Guru – Free site to get the best seats and amenities on your flights

ORGANISING

Trello – Share your projects, party plans: anything really with anyone
Fiverr – Site lists thousands of people who can do jobs for you for just $5
Dropbox – Free way to share files, photos with friends and colleagues

ENTERTAINMENT

Can I Stream It? – Service that allows you to find and download free, rental and to own movies instantly
Pandora – Stream music from any artist for free-great for parties
IMDb – Free membership movie site for movie buffs-share reviews
Wikipedia – Detailed information on anyone and anything
Pic Monkey – Free service to enhance your photos

* as seen on Today Tonight Perth March 2015