As real-time capabilities are becoming relevant in main-stream desk-top Linux more and more, and new variants and ideas are popping up all over the Open-Source world, a notoriously incomplete, overview of the existing variants of soft-real time Linux is given in the article. Many of the variants are for special purposes, some are more general approaches that target every-day soft-rt demands, like… audio/video streaming, finding your way through the many approaches and selecting the one that best fits your problem is not always easy, this article hopes to clarify a few basic terms and technological concepts, in the hope that it will simplify this selection process.

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