The post discusses the complexities of flight booking, highlighting various components such as fare components, priceable units, and open jaws. It is authored by one of the co-founders of Google Flights, providing insights into th...
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Cal Henderson is a tech executive, co-founder of Slack, and author, with interests in web APIs and software leadership.
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An hour-long video explores the intricate walk/pathing system in The Witness, showcasing the challenges of collision and pathing in 3D games.
5.121st January, 8:05 am
2026-01-21 • design macos encryption app icons critique
Nikita's critique of the Mac OS Tahoe icons reveals a troubling trend of declining quality in technology and design, termed 'enshittification.'
522nd December, 11:16 am
2025-12-22 • software engineering performance code
Performance hints from Jeff and Sanjay provide universally applicable strategies for improving software engineering practices.
The post discusses a project involving a rack-mounted keyboard device that allows users to input any Unicode codepoint using toggle switches, featuring a visual preview and compatibility with Emoji. The author expresses enthusiasm...
The post discusses the web graphing calculator Desmos, highlighting its features and usability. It emphasizes the tool's effectiveness for visualizing mathematical concepts and its accessibility for users.
4.428th February, 10:42 am
2026-02-28 • web development programming css
CSS advancements enable developers to create complex layouts easily, eliminating the need for JavaScript in many cases.
4.4MapToPoster
2026-01-21 • maps visualization poster geography and geology
MapToPoster transforms open street map data into attractive city posters, promoting further geo-related creative projects.
Curling stones at the Olympics are made by one Scottish company, which also produced limited commemorative mini stones that sold out immediately.
4.326th November, 5:04 pm
2025-11-26 • crime incompetence humor
The post titled 'How to not get away with murder' humorously discusses extreme incompetence in criminal activities, suggesting that the author believes they would be a better criminal than those described. It is a light-hearted ta...
422nd December, 11:13 am
2025-12-22 • writing editing complexity
Text editing is a multifaceted process that requires careful attention to detail and an understanding of its complexities.
The post discusses the quality of racket tutorials for programming languages, highlighting their effectiveness and design. It is part of a personal blog by Cal Henderson, co-founder and CTO of Slack.
3.72025 Reading List
2026-01-06 • reading recommendations book reviews books
In 2025, the author completed 121 books, sharing insights on their reading habits and highlighting standout titles from the year.
3.73rd October, 3:42 pm
2025-10-03 • technology sensors raspberry earthquake
The post discusses Raspberry Shake, a community of earthquake and seismograph sensors that provide 3000 real-time sensor feeds globally. The author expresses interest in the project but notes that San Francisco is already well-cov...
The post highlights the ethical considerations of storytelling in startups, questioning the boundaries of truth and deception in their narratives.
3.43rd October, 3:44 pm
2025-10-03 • technology personal code admiration
Cal Henderson expresses admiration for Lizard.click, stating it is so pure that he wishes he had created it. The post is brief and reflects his personal thoughts.
3.328th February, 10:39 am
2026-02-28 • technology design apple
The post highlights the intriguing design of the Apple 'sleeping light' that mimics human breathing patterns, showcasing the beauty in small technological details.
3.321st February, 6:39 pm
2026-02-21 • technology color video games
Cal Henderson reflects on his challenges with the dialed.gg color matching game, attributing them to his color blindness but still enjoying the experience.
Cal Henderson praises Inkarnate as an impressive tool for creating D&D maps, enhancing the gaming experience.
2.65th October, 9:09 am
2025-10-05 • software henderson explorer directory opus
Cal Henderson expresses his intention to try Directory Opus Pro, noting the decline in quality of Explorer over time. The post is a brief personal reflection on software preferences.
2.3Devil Platforms
2025-12-04 • video games platformer games devil's advocate
The blog post discusses 'Devil', a platformer game that the author finds enjoyable to watch but frustrating to play. It reflects the author's personal experience and opinion on the game genre.
Cal Henderson expresses a desire to create a MILS-based Lego modular diorama, reflecting on his interests in Lego and personal projects.
The post is a brief mention of the author's personal website, highlighting his background as the co-founder and CTO of Slack. It includes a note about the date of the post and a reference to the website's content, which includes v...
The text is a personal website of Cal Henderson, co-founder & CTO of Slack. It includes a post about Lizardman's Constant and popular tags related to technology and entertainment.