Web 2.0 tools for speaking in ESL

Hi everyone.

I'm new to this site. I'm doing some research on the topic "anxiety and speaking skills in the ESL classroom". Could anyone, please, tell me if there are any digital tools (web 2.0) that might be used with my (more "anxious") students to improve their speaking skills? I'm already familiar with VOKI and Goanimate.


Thanks


Célia