SourceForge and Slashdot are both owned by BIZX. They bought them both from DHI (Dice) back in the start of 2016. The sale was announced in January of 2016. BIZ

SourceForge and Slashdot are both owned by BIZX. They bought them both from DHI (Dice) back in the start of 2016. The sale was announced in January of 2016. BIZX is pronounced like 'physics' but with a B. As near as I can tell, BIZX is an advertising company.