DataSiphon is a data manipulation and transformation utility written in Python. It provides both command-line and graphical interfaces and allows users to easily move data between databases or files, performing on-the-fly Python-scripted transformations.
xjnm is a java daemon that gathers numbers from arbitrary sources (e.g. cpu usage) and can store it on arbitrary storages (e.g. a jdbc database) for later analysis or react in arbitrary way to the data collected (e.g. inform an administrator by e-mail).
CGIgen is a collection of classes that are useful in data-encapsulation esp. for CGI-scripts. It also includes other classes that may be helpful in writing CGI-scripts.