Loganix - The most powerful spam blocker
Block Together - A useful tool which helps you block trolls on Twitter.
SubmitCore - SubmitCore offers web design and internet marketing services.
CleanSpeak - Keep inappropriate content and trolls out of your community
SearchBerg - SearchBerg offers content driven SEO services for businesses of all sizes.
BlockParty - Real-time voice chat rooms from the creators of turntable.fm