TortoiseSVN é um projeto Open Source desenvolvido sob a licença GNU General Public License (GPL). É gratuito para baixar e de uso gratuito, pessoalmente ou comercialmente, em qualquer número de computadores.

Although most people just download the installer, you also have full read access to the source code of this program. You can browse it on this link https://osdn.net/projects/tortoisesvn/scm/svn/. The current development line is located under /trunk/, and the released versions are located under /tags/.