FOP was the first big open source project I started. Six years ago, I donated it to Apache and shortly after that stopped working on it myself (I didn't have time once I started working at Bowstreet).
It was a lot of fun and I learnt a lot about software craftsmanship.
I still get an email every few weeks asking me a question about using FOP. Not entirely sure why my email address would be easier to find than the mailing list at Apache.
The original post was in the categories: software_craftsmanship fop but I'm still in the process of migrating categories over.
There may be broken links to media on this page. I'm still in the process of migrating them over.