Which character animation systems have you used in the past?

The interviewer would like to know if you have experience with the same systems used at Walt Disney Studios. Before your interview, if you can find out the character animation systems they use, be sure to include them in your response. There are dozens upon dozens of reliable character animation systems; some being free, and others as paid versions. Some systems work for Windows, Mac, Linux, or are cloud-based. Discuss the systems you have experience in, rating your level of knowledge from 1-10 if possible. By doing so, you are making it easier for the interviewer to gauge your level of expertise in each.