The Mac community has lost a giant. From a Facebook post from the Atkinson family:
We regret to write that our beloved husband, father, and stepfather Bill Atkinson passed away on the night of Thursday, June 5th, 2025, due to pancreatic cancer. He was at home in Portola Valley in his bed, surrounded by family. We will miss him greatly, and he will be missed by many of you, too. He was a remarkable person, and the world will be forever different because he lived in it. He was fascinated by consciousness, and as he has passed on to a different level of consciousness, we wish him a journey as meaningful as the one it has been to have him in our lives. He is survived by his wife, two daughters, stepson, stepdaughter, two brothers, four sisters, and dog, Poppy.
One of the great heroes in not just Apple history, but computer history. If you want to cheer yourself up, go to Andy Hertzfeld’s Folklore.org site and (re-)read all the entries about Atkinson. Here’s just one, with Steve Jobs inspiring Atkinson to invent the roundrect. Here’s another (surely near and dear to my friend Brent Simmons’s heart) with this kicker of a closing line: “I’m not sure how the managers reacted to that, but I do know that after a couple more weeks, they stopped asking Bill to fill out the form, and he gladly complied.”
Some of his code and algorithms are among the most efficient and elegant ever devised. The original Macintosh team was chock full of geniuses, but Atkinson might have been the most essential to making the impossible possible under the extraordinary technical limitations of that hardware. Atkinson’s genius dithering algorithm was my inspiration for the name of Dithering, my podcast with Ben Thompson. I find that effect beautiful and love that it continues to prove useful, like on the Playdate and apps like BitCam.