updyn is a shell script that updates a dynamic DNS service with the current IP address. It will work with any dynamic DNS service that allows you to call a URL to update the DNS. It works behind a router when an external IP address is different from internal IP, optional minimum time check, does not update unless your actual IP is different from your assigned IP, and can be set to update the DNS every set number of days whether or not your IP has changed.
ustr (Micro string library) is a string API for C. It has tiny overhead over just plain strdup(), is much safer, is easier to use, is faster for many operations, can be used with read-only or automatically allocated data. You don't even need to link to the library to use it (so there are no dependencies).
utf8proc is a library for processing UTF-8 encoded Unicode strings. Some features are Unicode normalization, stripping of default ignorable characters, case folding, and detection of grapheme cluster boundaries. The library can be used in C programs, but most of the functionality is also available as a ruby library. For PostgreSQL, there is an extension providing a function for preparing strings in case insensitive indices. The currently supported Unicode version is 5.0.0.
validator.py is a tool for ensuring that data conforms to certain sets of rules, called validations. A validation is essentially a schema for a dictionary, containing a list of rules for each key/value pair in the dictionary you want to validate. This is intended to fill a similar use case to form validations in WTForms or Rails, but for general sources of data, not just Web forms.
windRose is a small application for PDAs connected to GPS receivers. It provides navigation information such as latitude, longitude, altutide, and course, distance measurement (odometer), landmark / trip recording capabilities, waypoint management, map rendering, and weather information retrieval.