SARA (SAABs räkneautomat, SAAB's calculating machine) was developed by SAAB when the capacity of BESK was insufficient for their needs. The project was started the fall of 1955 and became operational in 1956. SARA was built using the drawings of BESK that SAAB had bought for a symbolic sum and with the help of people who had worked with BESK, but didn't stay when Matematikmaskinnämnden decided that there would be no second generation. SARA wasn't used much, but it became the start of DataSAAB and the development of CK37 and D2.
References
Bubenko, J.; Impagliazzo, J.; Soelvberg, A. (2005). "An interview with Börje Langefors". History of Nordic Computing: IFIP WG9.7 First Working Conference on the History of Nordic Computing (HiNC1), June 16-18, 2003, Trondheim, Norway. IFIP Advances in Information and Communication Technology. Springer US. p. 9. ISBN 978-0-387-24167-8. 978-0-387-24167-8 ↩