Forekast - Events on Forekast are posted and voted on by the community.
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
PodBooker - The easiest way to get booked on podcasts
Alternative.me - Welcome to alternative.me, the source of better software alternatives. Finding suitable software was never easier.
Speaker Directory by HeySummit - Guests for your next event or podcast (or submit yourself!)
Product Hunt - A website that lets users share and discover new products