Internet search giant Google has thrown open its recently launched social networking service, 'Google Plus', to everyone.

The company said anyone can now sign up for Google Plus and connect with people they care about. Earlier, the service was available only through invitation as part of trial runs.

"For the past 12 weeks, we have been in field trials... We are nowhere near done, but with the improvements we have made so far, we are ready to move from field trials to beta and introduce our 100th feature: open sign-up. This way anyone can visit google.com/+, join the project and connect with the people they care about," Google Senior Vice-President of Engineering Vic Gundotra said on the company's official blog on Tuesday.

Google unveiled 'Google Plus' in late June as part of efforts to garner a share of the lucrative social networking space that has so far been dominated by Mark Zuckerberg-led Facebook, which has about 750 million users worldwide.

The company also announced several new and improved features in the service's 'Hangout' video feature and said it has applied some of its search magic to the network as well.

Google Plus's 'Hangout' conferencing feature, which lets users video chat with multiple people at a time, will now be available on all phones running on Google's Android operating system -- more specifically, users that own smart phones with front-facing cameras.

The Hangout feature currently works with phones running Version 2.3 (Gingerbread) of Google's Android system. The company also said support for Apple devices will be made available soon.

Additionally, Google is also introducing "Hangouts on Air", which allows a user to make public broadcasts, as well as allows users to view broadcasts as spectators.

The search function, now accessible from the Google+ search box, will return results that includes content from the social network and the web.