Alternato - NOTE: Not available in English.
Forekast - Events on Forekast are posted and voted on by the community.
AlternativePedia - Discover free, open source or simply better alternatives for your software based on our research...
PodBooker - The easiest way to get booked on podcasts
Aventrix - Aventrix is a website that helps you discover new and fun activities.
Speaker Directory by HeySummit - Guests for your next event or podcast (or submit yourself!)