7.
eBay
The world of e-commerce was revolutionized even greater when eBay came on the market and gave the people the opportunity for online bidding.
Introduced to the world in 1995, by Pierre Omidyar, the company had over 2 million bids in 2 years, giving him the chance to take to another level and make the company public.
After 20 years the company has millions of registered users who sell almost everything, but the most important thing is that the company has tech working for it 24/7.
With over 15,000 employees and revenues over $8 billion per year, the company practically changed the way people sold items on the internet, revolutionizing and modernizing the delivery system and fee charged per item.
With that said eBay is probably the biggest market place in the online world where you could find and bid for almost everything, with the chance to experience a professional tech company that will constantly change over the years.