The Shappening: freestart collisions for SHA-1

qp tries: smaller and faster than crit-bit tries, by Tony Finch.

aRrgh: a newcomer’s (angry) guide to R, by Tim Smith and Kevin Ushey.

tenth, a simple bare-metal forth for the PDP-10.

HoustonTracker 2 is a music editor/sequencer for the Texas Instruments TI-82, TI-83/82STATS, and TI-83+/84+/SE. It allows you to compose and play multi-channel 1-bit music directly on your TI graphic calculator.

Half Adder in Mario Maker (YouTube)

Inside the Intense, Insular World of AOL Disc Collecting

At the Modules of Madness, posts generated by a Markov chain trained on the Puppet documentation and the assorted works of H. P. Lovecraft.

Skipping Stones To Lonely Homes, tricky puzzle game.

Twenty Questions, by Don Woods.