Created by Google, Microsoft, Yahoo!, HP, NASA and the World Bank, Random Hacks of Kindness (RHoK) is a global hackathon that brings together collaborators to define and solve challenges facing local communities all around the world. Now in its third year, Google has announced that it will be in attendance once again in San Francisco, Prague, and other locations, and is inviting developers and designers to sign up for the fast approaching event happening on June 2nd and 3rd.

The event, which we first covered back in December, will be taking place simultaneously in 21+ cities globally, from Seattle to Santo Domingo, from Philadelphia to Prague.

From Google:

Fueled by plenty of coffee and a strong desire to make a difference in the world, “hackers for humanity” working alongside subject matter experts have created innovative solutions to pressing problems in their communities.

In the three short years since its inception, RHoK communities have sprung up in close to 50 cities around the world, with the support of over 180 diverse partner organizations, from government and academia, to the non-profit and private sectors.

Willow Photo1 Developers: Google is going to the Random Hacks of Kindness hackathon and so should you

In recent years, Random Hacks of Kindness events have made an impact on social good by churning out mapping tools to report bushfires, apps to connect food stamp recipients with sources of fresh produce, and visualization tools around landslide risks.

Past results, from Google:

If you’re interested in doing your part as a hacker, programmer or designer, you can register at RHoK.org and find a participating city near you — almost 50 cities around the world are participating.

➤ Random Hacks of Kindness