uWSGI is a fast, sysadmin-friendly application server container, meant for professional deployment and development of Python, Perl, Ruby and Lua Web applications. It features multiple apps in a single process, advanced logging, sendfile(), memory reports, an integrated profiler, vector based I/O, self-healing, and a lot more.
Syncless is an experimental, lightweight, non-blocking (asynchronous) client and server socket network communication library implemented in Stackless Python 2.6. It contains an asynchronous DNS resolver (using dnspython) and an HTTP server capable of serving WSGI applications. It aims to be a coroutine-based alternative of event-driven networking engines (such as Twisted and FriendFeed's Tornado). It is already about that fast, but it has fewer features and is less stable now.
modu is a high-level toolkit for building database-driven Web applications in Python. It provides all the common components needed to build custom Web applications in Python, including form generation, object-relational database mapping support, pluggable template systems, database-resident session and user support, and more.
Assignment Collector/Grader is a Web application for collecting and automatically grading student lab work. It automatically runs JUnit tests against student uploads, immediately provides feedback to students, records student results for later review, provides a gradesheet summary of student performance, allows easy administration of students, assignments, and classes, and allows the availability of an Assignment to be timed.