Multi-connection command line tool to download Internet sites. Similar to wget and cURL, but it manages up to 50 parallel links. Main features are: recursive fetching, Metalink retrieving, segmented download and image filtering by width and height.
XUProxy is an extensible multi-protocol proxy based on the Twisted framework. It supports multiple protocol plugins (currently only HTTP), and multiple "filter" plugins for things like logging, caching, and Proxomitron-compatible ad filtering.
Yet another lightweight http server. Implements a few html rewriting rules delineated by '<?pico>' tags, and makes it fairly easy to add more straight into the C code. Does not have complete HTTP standards compliance; if you need foo, add it in!
Paperboy RSS aims to be the most powerful open-source news aggregator. Paperboy RSS works as a collection of tools for parsing XML through a base program and formatting it with XSLT.