His complete work
History - Due to the quick rising of the popularity of the Internet in the mid 90's the PGN format became popular as well. And when chess GUI's started to support the PGN format up to a point one could play eng-eng matches from predefined PGN opening sets a new phenomenon was born as previously one could only play matches from opening books.
Jeroen sent me his first opening testset in 1998 and the second (both 50 balanced positions) in 2000 which I used to improve REBEL. You can view and download these sets from the DGT PGN viewer.
After my retirement in 2003 Jeroen took a break too but became active again in 2005/6 when he joined the Rybka team as book editor and also started to create new test sets.
From the DGT PGN viewer you can download the (in total) 40 test suites in one file or download them in 40 separate files (of course) in one zip-file. The total number of openings is currently 2086.
In the past few weeks and months I have made 5 new testsuites for engine-engine testing. Here is a short description:
Jeroen Noomen, July 2017
Update October 2017