Linked by Eugenia Loli-Queru on Sun 5th Oct 2003 03:49 UTC
OSNews often reports on small and hobby operating systems. Here is a list for you to vote for the one with the right amount of technical and wider success potential for a bright future. 
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I hadn't heard of DROPS, but I'm so glad that the L4/Fiasco work has continued. In my opinion, it was some of the best and most novel low-level OS work that's been done in the past 20 years. I was really afraid that it would die when Jochen Liedtke died, but it's good to know that his work is continuing.
For those who don't know, L4/Fiasco/DROPS is a "nanokernel" message passing based architecture with superb performance because, primarily, it passes messages when possible directly in CPU registers. Many years ago they ported Linux to the nanokernel and L4 demonstrated multiple instances of Linux running simultaenously on top of the nanokernel with only about a 5% performance penalty. It is what Mach should have been.
Braddock Gaskill