#3 Eventbrite uses dim lights to recharge employees

It is an online ticketing service that allows event organizers to plan, set up ticket sales and promote events of any size and publicize them across Facebook, Twitter and other social-networking tools directly from the site's interface.

The company uses dim lights to recharge employees in accordance with the recent research that says, ‘dim lighting boosts creativity’. Its office includes a Zen Room, with low-lights and no noise. It's a place where employees can meditate, think or nap on the comfy couches.

#2 Yammer conducts hack days in costume

It is a freemium enterprise social network service company, now part of Microsoft.

Though lots of tech companies have "hack days," where developers gather to create new products or features, often working all night writing the code to bring their ideas to life, Yammer does this one better. The hack day lasts full 24-hours and employees dress up in wild costumes. The whole company joins in on the fun.

#1 GitHub crowns a monthly King or Queen of Developers

GitHub is a web-based hosting service for software development projects that use the Git revision control system. Each month, the company crowns a King or Queen of Developers and that person runs the help desk for its customers.

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