There are a lot of social jQuery plugins out there that can provide the number of followers and Koottam is one of them. The social jQuery plugin is simple, powerful and elegant and provides various cool ways to display your social link (almost any social service is supported).
Koottam is highly customizable providing 10+ options and 5+ themes from you to choose. Also, its very simple to add new themes and the counting can be static or animated easily. The social jQuery plugin comes under MIT license and the demo can be found here