TortoiseSVN 是免费的，你不需要为使用它而付费，可以用任何你希望的方式使用它，它开发的许可证是 GNU General Public License (GPL)。

TortoiseSVN is an Open Source project. That means you have full read access to the source code of this program. You can browse it on this link http://code.google.com/p/tortoisesvn/source/browse/. You will be prompted to enter username and password. The username is guest, and the password must be left blank. The most recent version (where we're currently working) is located under /trunk/, and the released versions are located under /tags/.