No moat. Still in business.

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Runs browser and API checks against your app from many regions and alerts you when they fail, set up as code.

Since 2021

Free plan · Uptime and monitoring · Developers

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Open-source error tracker that ranks frontend bugs from errors and session replays and opens fix pull requests on GitHub.

Since 2024

Uptime and monitoring · Developers

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Lets developers send templated email from browser or app code through their own mail provider, without writing a server.

Free plan · Transactional email · Developers

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Collects automated test results from many frameworks and pipelines in one place, with manual checks and release sign-off.

Free plan · Developer tools · Developers

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Adds AI translations to your app's language files on each pull request, so the team can review and edit them before merge.

Free trial · Developer tools · Developers

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Desktop scratchpad that runs JavaScript as you type, with Node, browser APIs and npm packages, for developers testing ideas.

Since 2024

Free plan · Developer tools · Developers

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AI agents test your web, mobile and API releases across languages and markets so software teams catch breakage early.

Since 2024

Developer tools · Software companies

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Runs automated and manual tests on thousands of browsers and real phones in the cloud for QA teams.

Free trial · Developer tools · Developers

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WebSocket server for app developers that keeps realtime messages ordered and recovers them after dropped connections.

Free · Developer tools · Developers

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An API and SDKs that pull structured data from web pages using plain-language queries, for developers building AI agents.

Since 2024

Free plan · Developer tools · Developers

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Cloud browsers and web agents that developers use to automate tasks on websites, paid by the hour or per task.

Pay as you go · Developer tools · Developers

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A hosted backend and SDK so developers can add LLM chat to client apps using their own provider keys, with no server code.

Since 2025

Developer tools · Developers

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Hosted service that runs multi-step AI pipelines calling your own backend and streams progress to users.

Since 2026

Free plan · Developer tools · Developers

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Click elements in a running React app to change layout, styles and text, with edits written back to your source.

Since 2025

Free plan · Design and images · Developers

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An API that returns a company logo for any domain from a CDN, with a React component and domain locked keys.

Free plan · Design and images · Developers

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Translates the text in your app, docs and website into many languages, with a CLI, API and review tools.

Since 2025

Developer tools · Developers

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Shows where and how React components are used across your repos, so design system teams can track adoption.

Since 2025

Developer tools · Developers

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Compares screenshots from your test runs so software teams can spot visual changes and approve them before merging.

Free plan · Developer tools · Developers

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Compares UI screenshots from your CI on each GitHub pull request so a reviewer can approve or reject every visual change.

Free plan · Developer tools · Developers

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Throwaway test inboxes that pull out one-time codes and magic links, so developers can test login emails in CI.

Since 2026

Free plan · Developer tools · Developers

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Gives QA teams and developers test inboxes and phone numbers to check signup, 2FA and password reset messages automatically.

Free plan · Developer tools · Developers

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Turns prompts into editable Python for mesh modelling, simulation setup and 3D printing, with shareable 3D results.

Since 2025

Free plan · Design and images · Manufacturing

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Adds uploads, image resizing and typed SDKs on top of the Cloudflare R2 bucket you already have, without bandwidth fees.

Since 2025

Free plan · Developer tools · Developers

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Hosted service that gives each AI agent its own inbox, phone number, storage and 2FA on domains kept for your project.

Since 2026

Subscription · Developer tools · Developers

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Screenshots UI changes in pull requests and uses an AI judge to separate intended changes from regressions.

Free plan · Developer tools · Developers

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Add a widget to a staging site so reviewers can pin comments on any element, then turn them into tickets or fixes.

Since 2026

Developer tools · Agencies

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Collects Playwright test runs from CI so teams can debug failures, spot flaky tests and track suite health.

Since 2026

Subscription · Developer tools · Developers

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An API that adds login, SSO and fine-grained permissions to the software you build.

Security and passwords · Developers

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Translate React, Next.js, Expo and Python apps at runtime with AI, with no translation files and no redeploys.

Free plan · Developer tools · Developers

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A white-label photo editor that software teams embed in their app or site, with a REST API for batch edits.

Free plan · Design and images · Developers

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Cloud Chrome sessions, sandboxes and scraping APIs that developers connect to AI agents or Playwright scripts.

Since 2024

Free plan · Developer tools · Developers

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A hosted form backend for React and Next.js sites that sends each form submission to your inbox with no server code.

Since 2024

Free plan · Forms and surveys · Developers

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Collects screenshots, HTML and stack traces when Puppeteer or Playwright scripts fail so developers can see what broke.

Since 2025

Uptime and monitoring · Developers

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Run long background tasks and AI agents in TypeScript with retries, queues, schedules and tracing, hosted or on your servers.

Since 2023

Developer tools · Developers

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Edit styles, layout and animations visually on your live site while your AI coding agent writes the changes into the source.

Since 2026

Design and images · Developers

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A Figma plugin that converts designs into clean responsive HTML, React or Vue code that developers can use.

Since 2020

Design and images · Agencies