Open RSS Bar is a Flash-based RSS reader. You can create example URLs to any feed in the library by clicking the OpenRSSBar in the Feed Library Reader. To link to feeds outside the feed library or a compliant service, you need to modify the Flash source a bit. You can use it indirectly by linking an iframe to the http://www.feedlibrary.org/openrssbar/openrssbar.html page or by adding the Flash directly to your site and providing a WebService proxy to the Feed Library WebService.
jlip is a SLIP-driver with additional features like one logical link over many physical lines (multiline), IP-over-TCP tunnelling with public key hosts authorization (elliptic curves) and data encryption (blowfish with 112-448 bits key) for VPNs (Virtual Private Networks). It currently works under FreeBSD only and there are no english docs. A russian to english translation is welcome.
PTML is a Python module which lets you embed Python code in text documents. Its most common application is dynamic content generation on Web servers, but it can be used anywhere you need to generate text files on-the-fly. The project is still at a very early stage, although the code should be usable enough for you to learn the syntax and experiment with possible applications. Future directions are briefly listed in the TODO file; suggestions and contributions are most welcome.