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awesome-website-testing-tools — Resource of web-based testing and validation tools
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16 September
Founder and CEO of Get Lighthouse, a management-coaching software company, and previously a product lead at KISSmetrics. Writes about leadership, management and product at jasonevanish.com.
One of the most challenging forms of customer validation is when you can see the pain and the need, but both you and the customer struggle to figure out the right shape of the solution within the constraints of what’s possible. Related
13 September
Entrepreneur and founder of Blueprint. Publishes a detailed, freely available longevity protocol documenting the food, supplements, devices and measurements he uses on himself.
Capability vs. Safety resource allocation: Nuclear: 60/40 Aviation: 60/40 Medical devices: 20/80 AI: 99/1 Do I understand the situation correctly? Related
11 September
Co-founder of Sundial; former vice president of product design at Facebook; author of The Making of a Manager; writes The Looking Glass.
The software of the future promises more power and flexibility for more imagination. We started with use-case software, moving to platform software, moving to all-purpose coding agents. Interface design is shifting rightward. A few things to keep in mind for designers: 1. Make the interface malleable. 2. Let preferences reach past the rule book. A descriptive vision beats fifty toggles. 3. Let feedback change the product. 4. Treat the seams as part of the experience. Nobody lives in one tool. And of course, the hardest of all: help people imagine bigger. Imagination is now the scarce resource. coding agents Related
7 September
Mathematical physicist at UC Riverside. Wrote This Week's Finds in Mathematical Physics and now the Azimuth blog on mathematics, physics and environmental science.
RE: https://mathstodon.xyz/@tao/117230983938174038 @tao writes: "For the first time in the history of mathematics, we are faced with the situation that open problems in pure mathematics -- one of the primary fuels for mathematical discovery -- are being mined as a non-renewable resource". Very important thought! But maybe it's renewable if one is willing to solve an already solved problem without looking at the existing solution. I sometimes fantasize about a far future world where everything I could prove has already been proved. That wouldn't need to stop me from making new discoveries, sin… Related
1 September
Epidemiologist; founded Your Local Epidemiologist in March 2020 to translate public-health science, and consults for organisations including the CDC.
27 August
FreeBSD developer and former FreeBSD Security Officer; founder of the Tarsnap online backup service and author of the scrypt key derivation function.
20 August
Programmer, photographer and musician, best known for the Python Requests HTTP library and other Python tooling.
I wrote a new essay about a strange inversion in AI-assisted programming. Old-school programming made sustained attention the scarce resource. You entered a tight loop with the machine, and the difficulty itself kept you engaged. Agentic coding changes that. To reach the same intensity, you keep more work in flight, run more agents, and consume more inference. Flow becomes throughput, then the usage meter appears. There are legitimate economic reasons for limits. But when higher plans are explicitly sold as freedom from interruption, uninterrupted access to your own momentum becomes the produ… kennethreitz.org
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Writer, editor and executive coach; co-founder and editor of A Book Apart and a former contributing editor at A List Apart.
Mastodon “We’re occupying a strange political moment in which humanities work is both massively undervalued and everywhere extracted as a valuable resource.” defector.com
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Bluesky “We’re occupying a strange political moment in which humanities work is both massively undervalued and everywhere extracted as a valuable resource.” defector.com
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14 August
Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.
11 August
Italian software architect working on Microsoft 365, Azure and GitHub tooling. Microsoft MVP and GitHub Star; writes, speaks and streams about developer productivity at emanuelebartolesi.com.
30 July
Chief Scientist at Google DeepMind and Google Research, at Google since 1999, where he co-created MapReduce, Bigtable, TensorFlow and the TPU.
29 July
Founder of Scale AI and, since 2025, Chief AI Officer at Meta, where he leads the company’s superintelligence lab.
ambition
Their words
all of a sudden, the scarce resource isn't going to be intelligence or agency. I really think it's going to be vision and ambition.
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youtube.com
18 July
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
9 July
Head of Instagram since 2018, previously head of Facebook's News Feed.
Their words
I think that you can imagine at least in an year or two coming that the the burn rate of a strong engineer might be the same as their salary or their cost of employment.
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youtube.com
1 July
Freelance climate and energy analyst in Oslo, writing on Europe, the US and Australia; worked in the Australian renewables industry before that.
Google energy
Their words
It is actually pretty likely that it was Google's efficiency actions that enabled their total energy consumption to increase.
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ketanjoshi.co
30 June
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
LLMs Google
Their words
So in that sense basically using it like a very souped-up version of Google on like zero in on the right human written resource.
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youtube.com
9 June
Bootstrapper and investor. Founder of TinySeed and MicroConf, host of the Startups for the Rest of Us podcast, and author of several books on self-funded software startups.
What should I talk about at MicroConf Iceland this fall? I’m looking for ideas for a 35-minute main-stage talk. A couple constraints: • No early-stage validation or “how to launch” topics • No AI talks, I’ve covered that ground plenty What are you thinking about these days? What’s a topic you’d want me to unpack? (Even if you’re not attending, the talk will be on YouTube a few months after the event.) Related
26 March
American budget-travel writer who publishes as Nomadic Matt. Author of How to Travel the World on $50 a Day; runs nomadicmatt.com, a long-running site of destination guides, packing advice and gear recommendations.
Their words
If you or someone you love has Celiac disease, these travel cards are a useful resource! (Use the code NOMADICMATT for 10% off!)
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nomadicmatt.com
24 March
Writer and academic, author of The Cult of Smart and How Elites Ate the Social Justice Movement; writes a daily newsletter on politics, education and culture.
20 March
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
Their words
But now it's not about flops, it's about tokens. So what is your token throughput and what token throughput do you command?
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youtube.com
13 March
Founder and chief analyst of SemiAnalysis; reports on semiconductor supply chains, AI datacentre economics and what the chip export controls actually do.
data centers energy
Their words
So, space data centers effectively are not li limited by, you know, hey, we have this energy advantage. It's actually just limited by the same contended resource. We can only make 200 gawatts of chips a year by the end of the decade.
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youtube.com
10 March
Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
Their words
Zod - A great schema declaration and data validation library for TypeScript.
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kentcdodds.com
28 February
Genomics researcher and writer on science, biotech and the culture of research.
Their words
Trials serve two distinct functions: validation — confirming whether a drug works and is safe — and learning, or generating biological data to refine our understanding of a disease, a compound, and the relationship between the two.
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writingruxandrabio.com
5 October 2025
Head of growth at Chess.com, previously growth and monetization lead at Grammarly and Duolingo and a product manager at Google.
Their words
And the third one is like we did a lot of actually PR uh prior to the service going out just to get the word out. Um and you know PR has has its time and place. Uh but I think doing it before you have validation that customers definitely want the thing is quite risky. It can lead to a lot of sunk cost uh once you get it out because you're you're just you know you need to see it through.
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youtube.com
1 September 2025
Mac and iOS developer at the Iconfactory, where he has worked on apps including Twitterrific and Tot. He writes about development at furbo.org.
15 April 2025
Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.
Great example of generate -> validate loop + error analysis > "the most effective route to improve outcomes was brute force: retry steps until they passed or reached a limit. We give the validation errors ... to the LLM and built a loop runner" LLMs Related
21 March 2025
Writer and former McKinsey/BCG strategy consultant; author of The Pathless Path and Good Work, about leaving the default career track. Publishes the Boundless newsletter and podcast.
Their words
A perfect sized companion (~100 pages) to understanding and trusting your intuition—breaking free from external validation and building courage through three core principles.
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pathlesspath.com
9 March 2025
Professor of international affairs at Johns Hopkins SAIS and co-author, with Abraham Newman, of Underground Empire: How America Weaponized the World Economy.
Their words
This is why I think that The Siren’s Call is a very important book.
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programmablemutter.com
5 March 2025
Software engineer who writes the blog Made of Bugs about performance, debugging and understanding computer systems. Previously worked at Anthropic on interpretability, at Stripe on Sorbet, and at Ksplice.
https://bughunters.google.com/blog/5424842357473280/zen-and-the-art-of-microcode-hacking Shot: "This opens up the potential for hardware attacks (e.g., reading the key from ROM with a scanning electron microscope), side-channel attacks (e.g., using Correlation Power Analysis to leak the key during validation), or other [...] attacks" Chaser: "We noticed that the key from an old Zen 1 CPU was the example key of the NIST SP 800-38B publication and was reused until at least Zen 4 CPUs." Google Related
16 January 2025
Engineer and writer on machine-learning systems; author of Designing Machine Learning Systems and AI Engineering. "I work to bring AI into production. I write about AI system design."
Their words
AI judges must be evaluated and iterated over time, just like all other AI applications.
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huyenchip.com
16 December 2024
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
28 October 2024
Computer performance engineer working on datacenter performance at OpenAI, previously Netflix and Sun/Joyent. Author of Systems Performance and BPF Performance Tools, and creator of flame graphs.
12 April 2024
Machine learning engineer and independent AI consultant. He writes about LLM evaluation, tooling and applied ML at hamel.dev, and previously worked on machine learning at GitHub.
Debugging AI With Adversarial Validation For years, I’ve relied on a straightforward method to identify sudden changes in model inputs or training data, known as “drift.” This method, Adversarial Validation1, is both simple and effective. The best part? It req…
Related
1 October 2023
Economist at George Mason University, co-author of Marginal Revolution, host of Conversations with Tyler. Writes in short, dense claims about economics, culture and AI, and has moved position on AI in public more than once.
Their words
A very dynamic economy probably will be very good at building lots of robots cheaply, which may make us more rather than less likely to end up in Malthusian dilemmas.
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tylercowen.com
2 March 2023
Development economist; argues that letting people move to rich countries does more for the poor than aid, and wrote Let Their People Come.
From one piece
Choose People
2 beliefs, in the piece's order there
13 October 2022
Gwern Recommends 13 Oct 2022
Pseudonymous essayist. Writes at gwern.net on AI scaling, statistics, genetics and long-running internet research, with heavy citation and a habit of revising old essays in place rather than leaving them wrong.
Their words
It is an invaluable resource for any researcher
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gwern.net
17 March 2022
Cryptography engineer; maintains Go's cryptography libraries as a full-time open-source maintainer, funded directly by companies that use them.
18 December 2021
Free software developer; maintainer of sway, wlroots, aerc and scdoc, and founder of the SourceHut (sr.ht) software forge.
20 October 2020
Emeritus Professor of Statistics at the University of Cambridge, former president of the Royal Statistical Society, and author of The Art of Statistics.
14 March 2019
Writer and researcher on how people organise online; wrote Working in Public, on the maintenance of open-source software, and Antimemetics.
5 April 2018
Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.
Sharp-Edged Finalizers in Go 2018-04-05, David Crawshaw For background, see my last post on why in general finalizers do not work. We cannot use an object finalizer for resource management, because finalizers are called at some unpredictable distan…
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17 April 2009
Professor of psychology at the University of Toronto and Brooks and Suzanne Ragen Professor Emeritus at Yale. Author of Against Empathy, The Sweet Spot and Psych, and writer of the Small Potatoes newsletter.
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