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Pieter Levels
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I replaced all these SaaS with my own vibe coded services, so about $25,000/mo savings
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20 September
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.
19 September
Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
The life of a SaaS builder. I know it's my job to show you why this is better, but man it is so exhausting trying to get people to stop what their doing for a second to give your thing a look. SaaS Related
Brazilian software engineer, creator and maintainer of GoReleaser; works on Copilot CLI at GitHub. Writes about tooling and his setup at carlosbecker.com.
18 September
Economics writer; author of the Noahpinion newsletter.
16 September
Austrian developer. Created the libGDX game framework, and more recently the pi coding agent, which moved with them to Earendil — Armin Ronacher's company — in April 2026. Writes at mariozechner.at.
he vibe coded the recording tool as i sat next to him at the vienna office. sometimes it's alright to have the ceo vibe slop his way to success. Quoting @colindaymond Radius lets you work with and collaborate on artifacts, natively within Pi Related
Writes Hyperdimensional, a newsletter on AI policy and governance. A White House AI policy adviser in 2025; joined OpenAI on 6 July 2026 to lead its Strategic Futures team.
nobody should patronize those who newly have opinions about third party evaluators. non-experts forming opinions fast is part of the american tradition. the constitution itself was, in a very important sense, vibe coded by 20 somethings with concepts of a plan. but newbies being fleeced is also part of the american tradition. “caveat emptor” is a provision of a contract signed by an adult, not some god-given right to be treated as something other than a little child. you will be treated as a child no matter what. you are the buyer. it is your job to beware. America Related
15 September
Creator of Homebrew, the macOS package manager, and a Swift developer.
Products for devs are quite dead. SaaS for devs is dead. There are exceptions, though I think you have to extrapolate on variables that are not raw software. I have ideas and am implementing them. Mostly in private because building in public also can no longer be capitalized upon. Seemingly. Quoting @alex_holovach my WHOOP subscription expired so i had codex reverse engineer it and build my own app - telemetry goes to my prometheus server - grafana and the app visualize it - hermes monitors metrics and plans workouts next wanna build my own Zwift and Strava the era of personal software is here SaaS Related
14 September
Venture capitalist and founder of Theory Ventures, previously a partner at Redpoint. Writes a near-daily blog on startups, SaaS metrics, data and AI.
Are we seeing an AI pacing rotation? 🧵 While mega-cap infrastructure digested capex today (ORCL -4.3%, NVDA -2.8%), software surged : • Median SaaS stock up +4.5% (avg +5.2%) • 12 companies gained >= 10% in a single day • 92% of the index closed green (80 of 87) SaaS Related
11 September
Creator of Homebrew, the macOS package manager, and a Swift developer.
Your agents run Full Access. The Supply Chain is Compromised. The apps are vibe-coded. Related
10 September
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.
9 September
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Their words
My own vibe coded image resizing API with NodeJS's Sharp + Redis (saves ~$1,500/mo)
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x.com
Their words
My own vibe coded image resizing API with NodeJS's Sharp + Redis (saves ~$1,500/mo)
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x.com
Their words
My own $0/mo vibe coded NSFW detection service with Python's NudeNET (saves ~$2,500/mo)
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x.com
4 September
Creator of Homebrew, the macOS package manager, and a Swift developer.
Your agents run Full Access. The Supply Chain is Compromised. The apps are vibe-coded. It’s fine: just install Automic Vault. Related
Investing columnist for The Wall Street Journal and editor of the revised edition of Benjamin Graham's The Intelligent Investor.
Smart retirement-savings strategies can save a lot of taxes, if you can take advantage of them. Here’s some ways to play the retirement tax guessing game. https://t.co/RbPEu89X1P via @WSJ Related
3 September
Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.
2 September
Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.
In another case of it being quicker to build a tool than hunt around to find something that does what you need, here's a little vibe-coded thing for turning one or more GeoJSON shapes into a rendered PNG simonwillison.net
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1 September
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.
Fable 5.1 is a thoughtful collaborator, thinking hard about my requests, proactively patching my blindspots, and verifying the work's correct without being asked. And with cache reads now costing 75% less, to $0.25/M tokens, huge savings for long-running, agentic tasks! Quoting @claudeai We’re introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world’s most advanced models for coding and knowledge work. Related
General partner at Andreessen Horowitz and author of The Cold Start Problem. Previously led rider growth teams at Uber; has blogged on growth, network effects and marketplaces since 2007.
Before AI: - hardware is hard - teams > solo founders - technical founders only - PhDs build tech in search of a problem - hot SaaS startups get 100x ARR multiples After AI: - hardware is the only thing AI can't build - solo founders are 100x engineers - anyone can build - PhDs building AI infra name their price - SaaSpocalypse Am I missing anything? SaaS startups Related
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
From one piece
@levelsio on X
2 beliefs · x.com
SaaS
Their words
I think you have the real economic effects of AI companies sucking up entire industries now (a lot where indie hackers operate) I do think the SaaSpocalypse is at least partly real
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@levelsio on X x.com
SaaS
Their words
A regular boring but non-superficial SaaS app would do well 5 years ago but now it might not get anyone to sign up because it's so easy to vibe code by tens of thousands of other people
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@levelsio on X x.com
31 August
Co-founder of AQR Capital Management; quantitative investor and writer.
Where does she think “savings” go? Quoting @Tablesalt13 JUST IN - EU President Ursula von der Leyen says that people's savings accounts are a problem and that she must put this money "to the service of European companies" says her plan to "securitize them" and "supervise them" They're coming for your savings, Europe. Related
29 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.
28 August
Economics writer; author of the Noahpinion newsletter.
21 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.
i have another saas to kill (will share results of Kill My SaaS 1 next week!!) Quoting @swyx btw if you havent set your {codex | claude | gemini | devin} automations to autoresearch how to improve your seo/aeo every week you are really truly missing out on free, should-be-commoditizing-but-weirdly-untapped alpha SaaS Related
26 July
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
SaaS
Their words
I cancelled and then vibecoded 100% of my SaaS subscriptions I only pay for domains, server hosting and storage and AI APIs
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levels.io
20 July
Co-founder of Modem and a founding engineer at Sentry, where he went on to be VP of Engineering. Co-author of Third-party JavaScript, and co-host of the State of Agentic Coding podcast with Armin Ronacher.
14 July
Indian software developer and prolific blogger on PHP, Laravel and JavaScript; open-source enthusiast publishing near-daily at amitmerchant.com.
28 June
Co-founder of Modem and a founding engineer at Sentry, where he went on to be VP of Engineering. Co-author of Third-party JavaScript, and co-host of the State of Agentic Coding podcast with Armin Ronacher.
Just noticed a vibe-coded project of mine cost $200/month to serve a few dozen users/day 😭 Turns out it was doing 10s of millions of unnecessary Redis polls/day, even when idle - telemetry alone cost $$ a possible clue for why infra providers are growing so much right now Related
24 June
Makes NeetCode, the structured practice list and video walkthroughs people use to prepare for coding interviews; a former Google engineer.
15 June
Co-founder of Foundry Group and of Techstars. Has blogged at Feld Thoughts since 2004 and has written or co-written nine non-fiction books on startups and venture capital.
6 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.
Across the 241 SaaS companies I'm invested in, less than 5% had any notable social media audience when they started (or have built one since). As a data point, about 22% of them are doing 7 or 8-figures of ARR. If you want to do SaaS, build your network, not your audience. Quoting @Shpigford real talk: having a decent sized audience *helps* but is by absolutely zero means a guarantee that anything succeeds/works/makes money. have put out TONS of things that got all of about 3 people to actually sign up for. SaaS Related
4 June
Economist at Oxford's Global Priorities Institute; works on what advanced AI would do to growth, saving and the long-run economy.
From one piece
The better AI gets, the smaller its share of the economy might get – Alex Imas and Phil Trammell
2 beliefs, in the piece's order there
Their words
Then the person who doesn't satiate in capital is going to have if they're being rational they're going to have a higher savings rate.
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youtube.com
interest rates
Their words
things have to go really wrong for us to like just get over the threshold of uh you know, capital being productive enough to automate lots of work, but not be productive enough that that the interest rate is high and or the price of capital produced goods is falling a lot, okay? So, even without redistribution, a little bit of savings will save a lot of people.
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youtube.com
31 May
Programmer and writer on computer architecture, performance, and software reliability. He has worked on CPU design at Centaur Technology and on software at Google and Microsoft, and writes long-form technical essays at danluu.com.
It's interesting how much (some) people are adopting AI-isms in writing even when not using AI. It makes sense that people would fall into the same patterns after seeing them everywhere, but it's still very weird to, live, watch someone who never used to write like this, write out something that's full of "It's not X, it's Y", etc. If you actually read it, it's a little too well reasoned and doesn't have enough nonsense phrases to be AI writing but, superficially, it's very AI-coded writing. Related
30 May
Scottish software developer on the Statamic core team; runs a one-person business maintaining Statamic addons such as Runway and writes at duncanmcclean.com.
Man oh man, it's hard to start a Saas from the ground up. I think my SEO efforts are paying off. I had users 2 & 3 sign up for @clearinghousehq yesterday out of nowhere. One cancelled pretty quickly... but good to know that _something_ is working. SaaS Related
24 May
Co-founder and CEO of Every. Writes the Chain of Thought column about working with AI tools and hosts the podcast AI & I.
From one piece
AI predictions: Job markets, Codex beats Claude, and the death of org charts | Dan Shipper
3 beliefs, in the piece's order there
SaaS
Their words
So, this is another good prediction. I would buy SAS stocks right now.
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youtube.com
SaaS
Their words
When I run the agent on that website, I'm using my tokens. I'm not using the the vendor's tokens. I'm not using the app's tokens.
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youtube.com
SaaS
Their words
And I think that what agents do is increase the number of users of SAS. Not get rid of it.
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youtube.com
22 April
Researcher on distributed systems and local-first software at the University of Cambridge; wrote Designing Data-Intensive Applications.
SaaS
Their words
software as a service businesses, for example the whole reason why they can charge a subscription is because they are able to essentially hold a gun to the customer's head and say, "Pay us at your subscription, otherwise we will delete all your data."
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youtube.com
14 April
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.
.@TheCraigHewitt takes the stage to close out #MicroConf 2026 talking about how to run a SaaS in a post-software / agentic world. SaaS Related
13 April
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.
.@einarvollset takes the stage to talk about how to know the right time to sell your SaaS at #MicroConf US, 2026. SaaS Related
1 April
Uber's first Chief Technology Officer, from 2013 to 2020; later CTO of Coupang and of Faire.
27 March
Co-founder of Foundry Group and of Techstars. Has blogged at Feld Thoughts since 2004 and has written or co-written nine non-fiction books on startups and venture capital.
Nothing New to See Here A founder told me seasoned engineers keep saying AI-built software is not possible. I've heard this exact story before - about the Internet, the Web, SaaS, and mobile.
SaaS Related
20 March
Software entrepreneur who bootstrapped and sold FeedbackPanda and now builds Podscan; writes The Bootstrapped Founder.
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.
19 February
FreeBSD developer and former FreeBSD Security Officer; founder of the Tarsnap online backup service and author of the scrypt key derivation function.
13 February
Programmer, teacher and speaker; long-time Microsoft developer-community figure, host of the Hanselminutes podcast and author of the hanselman.com blog.
You vibed an app, for an audience of one. Add it to Tiny Tool Town. But You know what Tiny Tool Town REALLY needed? *TIKTOK MODE* Why not mindlessly scroll awesome vibe coded apps rather than videos? Maybe one will help you or someone else! go hit **https://tinytooltown.com** and tap "SHORTS" for TikTok/Shorts/Reels Mode Related
23 November 2025
Co-founder of Modem and a founding engineer at Sentry, where he went on to be VP of Engineering. Co-author of Third-party JavaScript, and co-host of the State of Agentic Coding podcast with Armin Ronacher.
7 October 2025
Writer and novelist. Publishes essays and book notes at nateliason.com; author of the novel Husk and of Crypto Confidential.
18 August 2025
Co-founder of the AI agent company Sierra, and previously an eighteen-year Google executive who ran product for Workspace, virtual and augmented reality, and Google Labs.
From one piece
How is AI Different Than Other Technology Waves? (With Bret Taylor and Clay Bavor) [ACQ2]
2 beliefs, in the piece's order there
Their words
many of the breakthroughs that we've had that have enabled us to to deliver such quality and cost savings and more have come through novel agent architectures and and really going down a click or two in in the stack to innovate at at lower levels of the technology stack.
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youtube.com
SaaS
Their words
And in contrast to software as a service or software you'd buy off a shelf at, you know, Fry Electronics, you know, decades ago, which might help you be marginally more productive, help you get a job done. Agents, in contrast, are actually getting the job done for you. And so you're in essence hiring software to accomplish a task and get it done well.
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youtube.com
30 May 2025
Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.
Consider Knitting Let’s say that, like me, you are a person who stares at a computer and writes code for a living. As a straight male who grew up in a time where knitting was very strongly female coded, it for the most part never o…
Related
13 March 2025
French software engineer, public speaker and fully remote nomadic worker; writes about frontend development at maxpou.fr.
Excited to launch YoutubeMate, my first SaaS! 🎉 It summarizes YouTube videos so you can get the key points without wasting your time. 👉 youtube-mate.com
SaaS Related
25 February 2025
Pen name of the Canadian-American writer behind mrmoneymustache.com, a blog on frugality, early retirement and index-fund investing that has run since 2011.
Wow, have you seen the stock market lately? And by lately, I mean the past several years or more. The value of the S&P 500 index of stocks, where most of us hopefully have a good chunk of our retirement savings stashed into index funds, is up about fifty seven pe…
Related
3 February 2025
Founder and chief analyst of SemiAnalysis; reports on semiconductor supply chains, AI datacentre economics and what the chip export controls actually do.
SaaS China
Their words
But what happens when every company can just invent their own business logic really cheaply and quickly? You stop using platform SaaS, you start building custom tailored solutions, you change them really quickly.
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youtube.com
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.
21 May 2024
Technology journalist; writes Understanding AI, after reporting at Ars Technica, Vox and the Washington Post.
self-driving cars
Their words
If Waymo vehicles were constantly asking for remote guidance, Waymo might need to hire so many remote operators that it negates the cost savings that come from not needing a driver.
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understandingai.org
29 April 2024
Founder of the toy manufacturer Viahart; writes about manufacturing, importing and why bringing production back to America is harder than it sounds.
2 April 2024
Structural engineer and senior infrastructure fellow at the Institute for Progress; writes Construction Physics on why physical things cost what they cost.
28 May 2021
American backpacking guide, writer and endurance athlete who has hiked more than 30,000 miles; author of The Ultimate Hiker's Gear Guide and publisher of gear reviews and trip-planning tutorials at andrewskurka.com.
Their words
Conclusion: If you expect to regularly carry the device but not a smartphone, which is the case with very few people, the inReach is the better option. Otherwise, the Somewear is more attractive: its seamless messaging and cost-savings more than offset the 0.5-ounce weight penalty and its slightly larger size.
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andrewskurka.com
8 November 2020
Software developer and entrepreneur; co-founder of Heroku, author of The Twelve-Factor App, and a researcher at Ink & Switch.
28 October 2020
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.
Their words
This book is a great overview of the keys to building a repeatable sales model for your SaaS business. It's a great mix of the best lessons from Jason Lemkin and his SaaStr blog and Aaron Ross's top tier consulting work. You can skip the last 50 pages which transitions to being a bad self-help book.
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jasonevanish.com
Their words
Want to know the story behind how Salesforce was built? This is that story in founder Marc Benioff's own words. At times I found him overly prescriptive without an appreciation for his unfair advantages he had (getting to start it while having a big salary at Oracle, having $6Mn in "bootstrapped funding", etc). However, he also helped pioneer the cloud and SaaS as a business model, so there are many great lessons to glean if you're building a high-growth SaaS business.
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jasonevanish.com
24 June 2019
Creator of the Zig programming language; president and lead developer of the Zig Software Foundation.
Nothing matches. Show everything
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
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do, this site shows a machine translation beneath the post, in
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The post itself is never changed, moved or hidden: what is set in the
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especially about tone.
Only the post's own words are translated. A quoted post, a linked
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