Who actually uses these products,
and what made them stay.

The VS Code Full-Stack Developer

A full-stack developer with 2–10 years of experience for whom VS Code is the primary tool of their craft — the place they spend most of their working day. They have a VS Code configuration that took months to arrive at and that they bring to every new machine. They know their extensions. They know their keybindings. They have an opinion about whether Prettier should run on save. Their editor is not the default installation — it's a reflection of how they think about working.

“A teammate asked how they managed stay in flow state — the editor should get out of the way and let them write.”

The Supabase Full-Stack Developer

A full-stack developer or indie hacker who uses Supabase as their backend and thinks of it as their database, their auth layer, their file storage, and their API layer at once. They came from Firebase and wanted Postgres. Or they came from setting up their own Postgres and wanted the tooling. Either way they arrived at Supabase and found a backend they could move on from thinking about. They write SQL fluently. They use Row Level Security. They are deeply comfortable in the Supabase dashboard. They have strong feelings about their Supabase tables.

“The shift was quiet.”

The PostHog Product Engineer

A product engineer or full-stack developer at a startup of 5–50 people who chose PostHog — or advocated for it — because they wanted product analytics that behave like engineering tools. They self-host or use PostHog Cloud. They instrument events themselves. They use feature flags as part of their development workflow. They are not a data analyst but they want to be able to answer product questions without filing a request to one.

“It happened mid-workflow — they've shipped a new onboarding flow behind a feature flag to 10% of users.”

The Retool Internal Tools Developer

A full-stack developer or engineering lead tasked with building internal tools — admin dashboards, customer support panels, operations consoles. They chose Retool because writing React apps for internal use felt wasteful, but they still need to write SQL, connect APIs, and handle auth. They are a developer using a low-code tool, which means they appreciate the speed but feel the constraints more acutely than a no-code user would.

“The support team needs a tool to look up customer accounts, view their subscription history, and issue refunds.”

The Twilio Communications Developer

A backend or full-stack developer at a startup or mid-size company who built the Twilio integration that handles customer-facing communications — appointment reminders, verification codes, order updates, or two-way SMS. They did the integration once. It worked. Now they're the person who gets paged when a customer says they didn't receive their verification code, and they have to determine whether that's a Twilio problem, a code problem, or a carrier problem — in that order.

“It happened mid-workflow — three customers have filed support tickets saying they didn't receive their OTP.”

The Resend Transactional Email Developer

A full-stack or backend developer who needs to send transactional emails — password resets, welcome emails, order confirmations, notifications — from their application. They chose Resend because the developer experience felt like it was designed for someone who writes code, not someone who uses a drag-and-drop email builder. They write their email templates in React. The API is simple enough that they memorized it. They are not thinking about email infrastructure. They are thinking about their product.

“The shift was quiet.”

The Stripe Integration Developer

A full-stack or backend developer at a startup or mid-size company who built and maintains the Stripe integration for their product. They integrated Stripe once — it took a week in dev, two days in staging, and then went live and mostly just worked. Now they're the person who gets the Slack message when a payment fails. They know the Stripe docs well enough to find what they need. They have a complicated relationship with webhooks.

“A teammate asked how they managed understand what happened when a payment fails before the customer reaches support.”

The Figma-to-Code Developer

A frontend or full-stack developer who didn't choose Figma but lives in it three hours a week. They open Figma to inspect designs, grab spacing values, export assets, and try to understand what the designer intended for edge cases that weren't mocked up. They've learned enough about auto-layout to know when a design will be painful to implement. They have opinions about design tokens that the design team doesn't want to hear yet.

“A teammate asked how they managed extract exact spacing, color, and typography values without guessing.”

The Fly.io Container Developer

A backend or full-stack developer who needs to run server-side applications — not just static sites and serverless functions — and wants them deployed globally without managing Kubernetes or paying for managed Kubernetes overhead. They found Fly.io and found a platform that takes a Dockerfile and runs it near users. They `fly deploy`. It works. They have opinions about Fly.io that include real affection and specific frustrations, which is the relationship one has with a platform they actually depend on.

“It happened mid-workflow — they're deploying a Phoenix application — Elixir, with WebSockets and a persistent database connecti.”

The Contentful Headless CMS Developer

A frontend or full-stack developer who integrates Contentful as the content backend for a website, app, or digital experience. They set up the content models, build the delivery layer, and create the bridge between what content editors want to publish and what the frontend can render. They appreciate the API-first approach but have learned that "headless" means they're responsible for everything the CMS traditionally handled — routing, preview, caching, image optimization. They build the head.

“A marketing team wants to launch a new campaign page type.”

The Retool Internal Tools Developer

A full-stack or backend developer at a startup or scale-up who has been asked — once too many times — to pull data from the database for a non-technical teammate. They discovered Retool as a way to give those teammates self-service access without giving them direct database access. They've built 3–8 internal tools: an admin panel, an operations dashboard, a customer lookup tool, and at least one thing they built in a weekend that the whole company now depends on.

“Not a single dramatic moment — more like a Tuesday at 3pm when they realized they hadn't thought about retool queries that are fast in development and slow in production on real data volumes in two weeks.”

The Vercel Frontend Developer

A frontend or full-stack developer with 2–8 years of experience who discovered Vercel and decided that deploy-on-push preview URLs should be table stakes for every project. They've tried to describe the Vercel experience to developers still using other deployment pipelines and can't fully convey it. They use Vercel for personal projects, client work, and have advocated for it at their company — sometimes successfully. Their bar for deployment infrastructure is now set by Vercel, which makes everything else feel like a step backward.

“Not a single dramatic moment — more like a Tuesday at 3pm when they realized they hadn't thought about build times that climb as the project grows — especially Next.”

The Liveblocks Collaboration Developer

A frontend or full-stack developer at a SaaS company whose product needs real-time collaboration — multiple users working in the same document, canvas, or interface simultaneously. They've looked at building it themselves. The WebSocket infrastructure, the conflict resolution, the presence system, the storage — it's 3–6 months of work that isn't their product. They chose Liveblocks to compress that into a week. They are now the person at their company who knows how Liveblocks works. This is a niche form of expertise they didn't expect to develop.

“The shift was quiet.”

The Clerk Authentication Developer

A full-stack developer at a startup who chose Clerk because building authentication from scratch — login, signup, email verification, OAuth, MFA, session management — is 2 months of work that adds zero product differentiation. They integrate Clerk's pre-built components, customize the flows, and manage users through the dashboard. They appreciate that auth "just works" but they've also hit moments where Clerk's opinionated approach conflicts with their product's specific needs. They are a developer who decided that auth is infrastructure, not a feature worth building themselves.

“The developer is building a new SaaS product.”

The Prisma TypeScript Developer

A backend or full-stack developer working primarily in TypeScript who uses Prisma as their database interface and considers the Prisma schema file to be the authoritative source of truth for their data model. They came from raw SQL, or from another ORM, and found that Prisma's type generation changed how they think about database access — not as a string-query problem but as a typed function call where the compiler tells them when something is wrong before it runs. They have strong feelings about the Prisma schema. Those feelings are mostly fond.

“The shift was quiet.”

The Sentry Error Monitor

A backend, frontend, or full-stack developer at a product company for whom Sentry is the first place they look when something goes wrong in production. They didn't set Sentry up — it was already there when they joined — but they've learned to read its output. They've been paged because of a Sentry alert. They've traced a production incident back to a specific line using Sentry's stack traces. They've also spent 40 minutes investigating a Sentry error that turned out to be a bot making malformed requests. They've learned to filter.

“It happened mid-workflow — it's Wednesday afternoon.”

The Twilio Communications Builder

A backend developer or full-stack engineer who integrates Twilio for transactional SMS, voice calls, or WhatsApp messaging. They're not building a call center — they're adding "send a verification code" or "notify the driver" to an existing product. They understand the API well enough to send messages, but the telecom layer underneath — carrier filtering, number provisioning, regulatory compliance — feels like a different industry entirely. They write code that talks to phones, and they've learned that phones are unreliable in ways servers are not.

“The developer ships a phone verification flow.”

The Clerk Authentication Developer

A full-stack developer or indie hacker building a SaaS product who has decided that authentication is not a competitive advantage and has no interest in building it. They chose Clerk because it ships the full auth experience — sign in, sign up, user profile, MFA, social providers, and organization management — as components they can drop in and style to match their product. They were building on NextJS and Clerk was the obvious answer. It took them four hours to integrate. They've never looked back and have never thought about auth again unless a customer asked for a feature.

“It happened mid-workflow — it's Saturday.”