Some students also decide to develop their own co-ops if they wish to do something that is not offered. This usually involves starting a new company or reaching out to a company Northeastern does not have a partnership with and facilitating the creation of a co-op partnership. Many companies continually pass down their co-op opportunities to Northeastern students so these new partnerships are documented in Northeastern's co-op database, known as NUCareers, to be given to future Northeastern students. Students that decide to start their own companies are usually involved with IDEA, Northeastern's Venture Accelerator, and will sometimes spend their entire two or three co-ops solely developing their companies. They might also join the Husky Startup Challenge which also helps develop student-run companies. If a company is successful in either IDEA, the Husky Startup Challenge or both, they often to move onto MassChallenge in Boston which is a huge global non-profit startup accelerator and competition.