Birdly - Birdly is an expense management and expense report solution for SMBs.
wikiHow - wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual.
PushMarket - Automate personalized emails for ecommerce (YC15)
Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.
Dynamic Campaigns by Sigstr - Share the most relevant content in every email
AllAnswered - Your Team's Collective Brain All-In-One Knowledge Management System Wiki + Q&A + Workflow + AI