Over the last three years Google Summer of Code has provided 1500 students from 90 countries the chance to work on open source projects. Each participant will receive $4,500 as a stipend. Student applications will be accepted from March 24th to March 31st.

Details on the software projects are available now. Given the short time that the application is actually open getting a start looking for projects that interest you might be wise.

externs.com offers listings of science internships and engineering internships.

Related: Preparing Computer Science Students for Jobs – Open Source for LEGO Mindstorms – Open Source: The Scientific Model Applied to Programming – posts on fellowships and scholarships