Hivoe - Engage with your audience on Twitter automating your Direct Messages
BrandBird - Brand your Twitter content uniquely
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Poet.so - Capture and share Twitter posts as beautiful images
Left Unread - Never leave DMs unread again.
Supercat.app - Turn your Product Hunt comments into beautiful images