Cyrus is an IMAP server designed to handle massive quantities of mail, with a number of features not found in other IMAP implementations, including support for: - running the daemon without root privileges; - POP3 and NNTP in addition to plain IMAP; - CalDAV and CardDAV; - secure IMAP using SSL; - server-side filtering with Sieve; - mail users without login accounts; - simple mail quotas; - virtual domains; - IPv6.

Fcitx is an input method framework with extension support, which provides an interface for entering characters of different scripts in applications using a variety of mapping systems.

A PDF toolkit implemented solely in Python. It is capable of: * extracting document information (title, author, ...), * splitting documents page by page, * merging documents page by page, * cropping pages, * merging multiple pages into a single page, * encrypting and decrypting PDF files. By being Pure-Python, it should run on any Python platform without any dependencies on external libraries. It can also work entirely on StringIO objects rather than file streams, allowing for PDF manipulation in memory. It is therefore a useful tool for websites that manage or manipulate PDFs.

Popt was heavily influenced by the getopt() and getopt_long() functions, but it allows more powerful argument expansion. It can parse arbitrary argv[] style arrays and automatically set variables based on command line arguments. It also allows command line arguments to be aliased via configuration files and includes utility functions for parsing arbitrary strings into argv[] arrays using shell-like rules.

The ncurses library routines are a terminal-independent method of updating character screens with reasonable optimization.

All the code has been moved to python-twisted-core, this package contains only documentation and is going to be removed. See https://twistedmatrix.com/trac/ticket/7964.