Every SourceForge project has a statistics page with the number of daily page views and downloads (example). Last year, I built a little screenscraper (page in German) that converted any project’s stats page into an RSS feed. But earlier this year, their statistics system frapped out and wasn’t since heard of.
But now it’s fixed, and I’ve updated my little service and added a bit of polish, and it’s back:
RSS feeds for SourceForge project activity statistics
I’m using Kai Blankenhorn’s FeedCreator PHP class. Here’s a screenshot of the Jena feed in NewsFire:
Source code (PHP, LGPL)
UPDATE: Sparklines!