Granite is an extension of GTK+. Among other things, it provides complex widgets and convenience functions designed for use in apps built for elementary OS.

hledger is a haskell port and friendly fork of John Wiegley's ledger accounting tool. This package provides a web interface as an alternative to the hledger command line interface.

The 1-Wire bus is a cheap low-speed bus for devices like weather sensors, access control, etc. It can be attached to your system via serial, USB, I2C, and other interfaces.

Racket (previously PLT Scheme) is an innovative programming language that builds on a rich academic and practical tradition.

ZSI is a Python package that provides an implementation of SOAP messaging, as described in The SOAP 1.1 Specification. In particular, ZSI parses and generates SOAP messages, and converts between native Python datatypes and SOAP syntax. It can also be used to build applications using SOAP Messages with Attachments. ZSI is ``transport neutral'', and provides only a simple I/O and dispatch framework; a more complete solution is the responsibility of the application using ZSI.