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Hamel Husain
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Excited about this! I've been impressed with raindrop so far. It helps you look at your data 🥰 and generate data (via simulations) to help you find errors.
raindrop simulations impressed
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17 September
Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.
I continue to be extremely impressed with our bankers at @MorganStanley. To be able to submit a wire transfer, while on a call with the team at @remote, confirm in the app, and have it all wrapped up before hanging up? PRICELESS 🏆 Related
Builds developer tools — SST, and now OpenCode at Anomaly. Posts constantly on x.com and writes almost never; the blog stopped in 2021.
i've been really impressed with everything you've been saying and doing oh wait sorry confused you with someone else Related
Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.
Very impressed by the TypeSafe/Jev onboarding. They knew they needed to overcome the question of "wait, so it's not an LLM?" and then threw everything at it. Really good. LLMs Related
Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.
Played around with Jev before I went to bed and I'm really impressed. It also fits so perfectly well for so many applications where traditional LLMs so far were just not viable for either speed or cost reasons. I bet we will see some fast followers. Quoting @CompleteSkeptic After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x cheaper (w/ output toke… LLMs Related
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.
If you’re in NYC tomorrow (Thursday), last event I’ll be at! Come along if you can. Also love New York’s energy: tech + hardcore engineering is here, everywhere, v impressed with the tech scene all-round Quoting @grinich what up nyc come hear @GergelyOrosz of the @Pragmatic_Eng tomorrow night at WorkOS Soho rsvp: energy Related
Co-founder of WordPress and founder of Automattic; blogs at ma.tt.
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.
Late to the party, but wow is Viktor a great product. I'm impressed with the quality of work + output, even without particularly good prompting. I wish it wasn't so noisy in Slack, but not really an easy problem to solve. It's the right spot, so just need to deal with it. Related
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
Woke up this morning with what is clearly an eye infection. Not good. Got the kids on the way to school. 7:30 I book an online appointment with a doctor. I send two photos. 7:35 I have phone chat with the doctor. 7:38 I have an electronic prescription for antibiotic drops. 7:59 I am standing in front of the pharmacy which opens at 8:00 8:15 back home, dripping my eye 9:00 the infection has visibly pretty much cleared out I am actually impressed by how flawlessly this all worked. I was fully prepared it'd eat up an entire day. Related
14 September
Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.
this thing was widely reported as “the end of programming” in 1981 https://t.co/j0cok5NZKf right before that, in 1960s, people thought COBOL would allow everyone to build whatever software they wanted and there’s no need for programmers now the same people in the same bubble think agents will finally end it, because they spent a weekend and got impressed by how quickly the agent could produce a toy. now they think that’s how everyone wants to spend their weekends open your eyes - most regular humans don’t even want to talk to an agent Related
10 September
Web developer and writer; an early GitHub employee, author of speaking.io and of widely read essays on startups and product.
Bluesky friends, i’m sadly here to say that meta has cooked with muse and it’s everything every personal ai assistant has tried to be. it just like… works. i remain skeptical and continue to be really impressed Related
x.com friends, i’m sadly here to say that meta has cooked with @Muse and it’s everything every personal ai assistant has tried to be. it just like… works. i remain skeptical and continue to be really impressed Related
28 August
Investor and writer. Previously a partner at Andreessen Horowitz and a product leader at Twitter, Facebook, Snap and Microsoft. Writes essays and memos at sriramk.com.
really impressed with the quality of work from @RyanGreenblatt , @METR_Evals and @OpenAI to investigate the HuggingFace incident. Both reports are recommended reading. OpenAI HuggingFace Related
22 August
Swedish designer and programmer. Designed early Spotify, worked at Facebook and Figma, and created the Inter typeface.
Two internet pages that has been low key crushing it for me lately is @modal and Cloudflare. So good. Especially impressed by Modal. Feels like the Linear/Stripe of infra (“just do what they do and you’ll be fine because they thought through every detail”) Related
18 August
German developer; founder and lead developer of Mastodon, the decentralized open-source social network.
RE: https://mastodon.social/@Mastodon/117117221397911074 After hearing feedback from people struggling with #Mastodon’s layout and navigation for a long time I’m really looking forward to these changes. And I’m really impressed with the work @imanijoy has put into researching user needs with surveys, interviews, and round tables. I feel like the community has never been so represented in the design process before. The screenshots are marked “in progress” for a reason though—it’s a process. Related
17 August
Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.
Trajectory have generally impressed me with their tasteful execution on ambitious goals. on our Continual Learning track, @rronak_ gave a very thoughtful overview on how they're tackling the main data problems left in CL, including why GRPO isn't enough and they had to go on-policy.... and then subsequently fix all the issues that come up with it nice overview from one of the early leaders in this field! (see the rest of the track for more, this one was quite stacked) Quoting @trajectorylabs It's time to rethink RL. Translating real world use into model improvements requires redesigning post-training algorithms for non-verifiable, per token rewards. At @aiDotEngineer 's World Fair, we share our insights into scaling algorithms like SDPO for continual learning. Related
11 August
Swedish programmer with degrees in engineering and psychology, author of Your Code as a Crime Scene and founder of CodeScene.
29 July
Co-founder of Sundial; former vice president of product design at Facebook; author of The Making of a Manager; writes The Looking Glass.
I'm impressed with Claude Design. I see its disruption starting with smaller teams. As a founder I find myself turning to it more and more for the convenience of one-off design tasks. Sure, it's super slow, and one-shot quality is not quite there, and its image capabilities suck, but using it in between multi-tasking other things, it's helping me move faster. As @HarryStebbings says the "all-in-one" Claude interface has a huge psychological advantage as being the place people are already working. I don't think it's a great tool yet for a designer-designer (the speed / control dials are not ye… Quoting @HarryStebbings Why we switched from Figma to Claude Design “I let the team do whatever is best for them, and this is a trend I've observed amongst almost everybody: Claude Design has done a great job. People really like using it, it's easy to use, and we've had a natural movement towards it. It's also easier to n… Anthropic Related
14 July
Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.
15 June
Machine learning engineer working on recommender systems, personalization and information retrieval. Previously worked on LLMs and LLM infrastructure at Mozilla.ai and on ML and recsys at Duo, Tumblr, Automattic and Comcast; wrote the 'What are embeddings?' text and ran the Normconf conference.
Their words
Gemma-4-12b-qat just came out but I've already also really been impressed with its performance relative to its size.
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vickiboykis.com
14 June
Founder and former CEO of Zynga, the social-games company behind FarmVille, Zynga Poker and Words with Friends; says he founded ten companies in all, and wrote Life at the Speed of Play.
Their words
And I believe the best product CEOs are in the minutia of the details. you know, all the stories about Steve Jobs. I was so impressed when I heard that he insisted on picking out the carpeting in the conference rooms, you know, and and I tried to have that same mentality of micromanaging the really small pixel level details that matter.
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youtube.com
2 June
Founder and former CEO of Zynga, the social-games company behind FarmVille, Zynga Poker and Words with Friends; says he founded ten companies in all, and wrote Life at the Speed of Play.
Their words
know your goal or suffer a death by a thousand compromises. Because what I had done my whole career and most of us do is compromise to get that next engineer, CTO, investor. You put a jerk on your board because you impressed with their firm name and the valuation and all your friends are going to be impressed and it's going to be so much easier. We make all these compromises and contort ourselves and eventually we wake up and it's company we don't want to work at.
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youtube.com
27 May
Senior economist at the Foundation for American Innovation; writes Second Best, and was the Niskanen Center's director of social policy before that.
6 April
Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.
Their words
Give the new Dell XPS series, or any of the other laptops shipping with Panther Lake, a try. I think you'll be as impressed as I've been.
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world.hey.com
2 April
Co-founder of Ethereum. Publishes long essays on mechanism design, governance and what cryptography is for, and returns to earlier positions to say which parts they no longer hold.
Their words
I was not impressed with the DGX Spark; it's described as an "AI supercomputer on your desk" but in reality it has lower tokens/sec than a good laptop GPU - and on top of that, you have to figure out the networking details of how to connect to it from your actual work device etc.
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vitalik.eth.limo
18 March
Maths educator; writes Mathworlds on how mathematics is taught and why so much of the technology sold to schools does not help.
11 March
Programmer and essayist who has worked at Amazon, Google, Grab and Sourcegraph. Best known for the long-form essays collected as Stevey's Drunken Blog Rants and Stevey's Blog Rants.
3 February
Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.
Their words
Anyway, I've been very impressed with NVIDIA GeForce NOW.
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world.hey.com
1 February
Mac and iOS developer; founder of Red Sweater Software (MarsEdit, FastScripts) and co-host of the Core Intuition podcast.
Hey @steipete - you must be going through heaven and hell right now. What a blessing and curse to upheave the whole world's attitude towards AI. I'm so impressed and happy that it's you who did it. Keep going. Related
29 January
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.
12 December 2025
Assyriologist and curator at the British Museum; reads cuneiform, and wrote The Ark Before Noah and The First Ghosts.
Their words
Well, that seal from Gobekli Tepe is a raindrop from which I infer writing, and it’s perfectly possible they all wrote on flat leaves.
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youtube.com
12 October 2025
Indian technology consultant and writer. Former editor of Beautiful Pixels; writes about Apple hardware and Mac software at nuclearbits.com.
Their words
One of the best bookmarking services available today.
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nuclearbits.com
23 July 2025
Co-founder and CEO of Google DeepMind, and a 2024 Nobel laureate in Chemistry for the protein-structure work behind AlphaFold.
Their words
Do you have enough data to make simulations, so that you can create more synthetic data that are from the right distribution? Obviously that's the key. So you need enough real-world data in order to be able to create those kinds of data generators, and I think that we're at that step at the moment.
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youtube.com
24 June 2025
Software engineer and engineering leader at Canonical, working on Ubuntu; writes about his homelab, Nix and tooling at jnsgr.uk.
Their words
I’ve been really impressed - Helix is fast, the default features are great and I don’t anticipate returning to vim.
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jnsgr.uk
12 March 2025
Co-founder of Ximian and Xamarin; CEO of GitHub from 2018 to 2021; now an independent investor and funder of open technical projects, including the Vesuvius Challenge to read the Herculaneum Papyri.
Exciting PlasticList update: We were honored to work with @bobaguys to identify and eliminate the sources of BPA contamination, and their teas are now BPA-free! They have fully transitioned to BPA-free receipt paper, which PlasticList confirmed to be BPA-free through independent lab testing. They have also switched to brown sugar in BPA-free packaging. We have been impressed with their commitment to get to the bottom of the issue and move fast to remove BPA from their supply chain. If you want healthy and delicious tea, I highly recommend Boba Guys! Quoting @natfriedman Advice for Food Companies Since we launched PlasticList, we’ve been heartened to have quite a few food companies reach out and ask for help interpreting their results and tracking down and eliminating their contamination. I’ve had calls with a bunch of these. I am happy to report that no food compa… Related
27 January 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.
Claude impressed me recently! A yak shave I was expecting to code by hand, and Claude did essentially all of it, instead. An experience report, and some reflections: blog.nelhage.com
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