Hello,

for facebook and twitter you can use https://www.socialoomph.com/

hootsuite is free and extremely user friendly with other social channel options.

Social Media Management Software | Sprout Social is easily the best and you get the free trial and for the price best bang for the buck easily

If you use blogging software like Wordpress, you can take advantage of functionality that lets you autopost to G+.

I don't know about such type software but thanks to all guys who give suggetion for it.

Make a Google search for the best services, you can also buy Facebook likes and twitter likes etc which can increase the visibility of your site, but before that make all the search about that services which you are going to take. Read carefully all the details about it.Because, if you are investing money then it is better to invest in a right place.
All the best.

friendsme+ tab is made only for Google+ otherwise hootsuite, socialoomph, sproutsocial & bufferapp posts not only in G+ even you can manage other social profiles too with real time stats.