Similar Projects

I know of two projects with goals similar to Tepatche's, but with different approaches. One project is Gerardo Santana Gómez's binary patches project (http://www.openbsd.org.mx/~santana/binpatch.html). It's not always practical to compile from source to keep a running system current (e.g., if a server has too much processor load or too little hard disk space, or if we have many identical machines), so distributing precompiled patches makes more sense than recompiling everywhere.

Leonardo Costa wrote OpenBechede (http://openbechede.sourceforge.net/en/). The goal of OpenBechede is to manage OpenBSD's ports infrastructure, handling dependency chains and updating them. The ports are not maintained together with the core OpenBSD system. For a better explanation on the ports, refer to http://www.openbsd.org/ports.html.