Racket is primarily distributed under the Apache License, version 2.0 and the MIT License, at your option.

Some components of some Racket distributions, including the compiled racket executable for the BC variant of Racket (“Regular” before version 8.0) and packages that distribute third-party libraries, are distributed under the GNU Lesser General Public License (LGPL) version 3.0. Any program written in Racket that does not distribute the BC variant racket binary itself is not affected by the license of that binary.

Versions of Racket prior to version 7.5 are distributed under the GNU LGPL, version 3.0.

See the LICENSE file in the source code for more information.