The Proceedings of the 3rd Brazilian Symposium on Software Components, Architectures, and Reuse (SBCARS 2009) bring the papers selected and presented in the edition of the event held in Natal/RN, from September 09-11, 2009. In this issue, the proceedings include 16 full papers. These papers were evaluated by at least three members of the program committee, which implied an acceptance rate of 37,2%. The event's program committee was coordinated by Ana Paula Terra Bacelo (PUCRS), who organized this volume.

You can find more information about SBCARS 2009 by visiting the website of the event.