PenPal World - Connect with people all over the world
Startup Stash - A curated directory of 400 resources & tools for startups
InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.
Polyglot Club - Polyglot Club is a new social network for language learners.
Content Marketing Stack - A curated directory of content marketing resources