Insurrection is a Web interface and RSS and Atom feed generator for Subversion that uses modern browser features while being as browser agnostic as possible. It has some repository rights administration features and a reasonably good-looking interface that can be customized. RSS and Atom feeds of updates to the project are available.
kdesvn-build is a script to automate the process of downloading, building, and installing KDE from its Subversion source repository. It supports many advanced features such as partial checkout/build of a module, the unsermake build system, incremental make, module checkouts using Subversion snapshots from the kdesvn-build.kde.org site, and repeatable builds. Many options are available, and they apply to every module by default, but most options can be overridden on a module-by-module basis. Every command it executes is logged.
svndumpalter is a utility to alter Subversion repository dump files. It is similar in concept to svndumpfilter, except that it can perform much more powerful manipulations on the data. It is useful for migrating projects between repositories, cleaning up existing repositories, and so on.