Cognitive science professor at UC San Diego and creator of Python Tutor, the online code visualizer.
liked
In terms of iOS apps, I use PDF Expert, which is a great PDF reader and annotator (using Apple Pencil), Notability as a virtual whiteboard (again with Apple Pencil), Google Docs for document editing, Google Calendar, and Gmail.
His Uses This interview, on whiteboards, redundant hardware and software minimalism.
American photographer and writer on cameras and photography; publishes long-running equipment reviews, technique guides and buying advice at bythom.com.
recommended
the best of the PDF editors I've found on the Mac.
Hogan's “Recommended Mac Software” page on his own site, a list of the utilities and applications he uses and advises photographers to use. The page shows no publication date; the date used is the server's Last-Modified header (2026-08-30).
Every entry is a verbatim quote and a link to the public post it came from. Nothing is paraphrased. If it is not on record somewhere public, it is not here.
The verdict is what they actually said: loved and liked are explicit; recommended means they told others to get it; uses means they only say they use it; read is a book on their public shelf with no verdict; mixed and disliked are kept too.
A dashed affiliate link, sponsored or their own label means the post disclosed a relationship. It is shown, never hidden.
The shading behind a date shows how dated a recommendation is for its kind of thing.
The shading behind a date shows how dated a recommendation is, for its kind of thing. Fully green is recent. It drains a quarter at a time as the post gets older, and is empty once it reads as dated.
What counts as old depends on the thing. A laptop praised four years ago has been replaced twice; a book loved twenty years ago is probably still loved. The shading is gone after about:
Hardware, services4 years
Software5 years
Podcasts, courses, other8 years
Books25 years
Stripes mean the post carries no date and the date shown is an estimate. No date at all, no shading.