17. Yoga studios

Companies: LinkedIn, Twitter

Tech companies like Twitter and LinkedIn, today have on-site yoga studios and instructors to provide the employees with a good relaxation. They believe that a clear head makes you a better engineer.

18. On-site gyms

Companies: Google, LinkedIn

Many tech companies like Google have on-site gyms. This is for two reasons: to help employees relax and also healthier employees mean less money spent on their healthcare.

19. Stipends for a killer computer setup

Company: Asana

The trend is to allow employees to make their workspace their own. Asana, a startup from Facebook co-founder Dustin Moskovitz, even gives employees a $10,000 stipend to "buy whatever they need."

20. Random holidays

Company: Zynga

Holidays have always been the best perk. It feels even better when you a get a day off for free. Zynga gives its employees "Zyngolidays" — random holidays selected by its CEO and executive staff. For example, Zynga gave all employees the day off on April 20th.