Here are two more(most of these websites link to each other): http://aggregate.org/MAGIC/ http://aggregate.org/MAGIC/ https://www.inwap.com/pdp10/hbaker/hakme

Here are two more(most of these websites link to each other): http://aggregate.org/MAGIC/ http://aggregate.org/MAGIC/ https://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html https://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html I think this trend of publishing bit twiddling tricks started when Dr. Dobb's Journal in it's early days published an article about various such tricks. If someone has a link to that article then please could you share it? I think the article's title was "Bit Magic". Edit: There were two DDJ articles: "Binary Magic Numbers - Some Applications and Algorithms" by Edwin E. Freed in Volume 8, Number 4, April, 1983; and "More on Binary Magic Numbers" by Dale Wilson from Volume 9, Number 3, March, 1984.