Loganix - The most powerful spam blocker
Block Together - A useful tool which helps you block trolls on Twitter.
SynapseInteractive - SynapseInteractive offers an array of services and solutions aimed at promoting businesses.
Secateur - Use Secateur if you want to temporarily or permanently block or mute (or both block and mute) a Twitter account and all its followers.
NetSearch Direct - NetSearch Direct is a lead driven digital marketing agency specializing in SEO, PPC, and Wordpress Web Design Services.
WebPurify - Profanity Filter, Image Moderation and Video Moderation Services Made Easy.