Halloween, RockRiot, JibJab, Mobile Video and Deepavali Apps Among Up-and-Comers This Week

A few interesting companies have shown up this past week on our Top 20 up-and-coming apps list, including gift-card maker JibJab, Slide’s Rock Riot, a Youtube-for-mobile app, and a religious app. There are also the usual mix of small gifting apps, simple quizzes, and games. At the top of the list, though, is a game called Halloween Haunting, from developers Mob Science. It is a gifting app that aggressively prompts you to send “spooky” gifts to your friends.