commun.it is a free Twitter community manager which you can use for managing your accounts easily. By using commun.it you can follow/unfollow, check who unfollowed you, mention your most engaged members, send a thank you tweet, retweet popular tweets, reply unreplied tweets, find high-value members based on engagement level and influence level, monitor engagement in your community, find new relevant Twitter followers based on keyword, location and language, create groups, block certain members, create Twitter activity and Twitter engagement custom reports, and set up automatic daily and weekly campaigns to thank your top new followers and top engaged members.