No moat. Still in business.

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APIs and an MCP server that fetch link previews, page metadata, screenshots and clean Markdown from any URL.

Since 2014

Free plan · Developer tools · Developers

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Draw electronic schematics and run analog and digital circuit simulations in the browser, with no install needed.

Since 2012

Design and images · Schools and tutors

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Lets teams edit, test and send transactional email templates without code deploys, with A/B tests and analytics.

Since 2014

Subscription · Transactional email · Software companies

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Watches web pages for changes and sends alerts or scraped data to Slack, Discord, Telegram or Google Sheets without code.

Since 2019

Free plan · Uptime and monitoring

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Email marketing app for sending newsletters, campaigns and automated sequences, built for teams that write together.

Since 2018

Free plan · Email marketing · Online sellers

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Records visitor sessions on your site and uses AI to point out errors, rage clicks and drop-offs, alongside heatmaps.

Free plan · Website analytics

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Build and A/B test pricing tables for your website without code, with Stripe revenue insights.

Since 2024

Free plan · Website builders · Online sellers

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Build popups, multi-step forms, quizzes and on-site widgets to collect leads and sales from website visitors.

Free plan · Forms and surveys

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Set up bots without code that pull data from websites into spreadsheets or APIs and alert you when pages change.

Free plan · Data and spreadsheets

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Handles in-app subscriptions for mobile apps, with a paywall builder, price tests and revenue reports for app teams.

Free plan · Payments and checkout · Developers

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Add one script to your site for widgets like local pricing, exit offers and social proof to lift sales.

Since 2025

One-off payment · Marketing and social · Online sellers

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Keeps one parts library across all the circuit boards in a project, with live supplier prices and lists of what to order.

Since 2026

Free · Inventory and stock · Manufacturing

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An API that turns web pages into clean Markdown, searches the live web and returns company brand data for AI agents.

Since 2024

Subscription · Developer tools · Developers

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API that pulls product prices, stock, search ranks and reviews from big online marketplaces in one format.

Since 2024

Subscription · Developer tools · Online sellers

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Design, send and measure email campaigns and push messages, with a WooCommerce plugin for online shops.

Free plan · Email marketing

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An API that pulls structured data out of web pages using AI, aimed at developers and AI agent builders.

Since 2024

Free plan · Developer tools · Developers

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Turn app features on or off and roll them out to chosen users without redeploying, with unlimited team seats.

Free plan · Developer tools · Developers

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Lets app and game developers change settings and run A/B tests remotely, without shipping a new build or waiting for store review.

Since 2024

Developer tools · Developers

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An API that crawls whole websites and returns tidy markdown for teams feeding RAG systems or training models.

Since 2024

Free plan · Developer tools · Developers

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Feature flag service that lets software teams roll out, test and switch off features in production without redeploying.

Subscription · Developer tools · Developers

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A browser extension that pulls lists and page details from websites into CSV or JSON, with no coding needed.

Since 2024

Free · Data and spreadsheets

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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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Watches web pages for you and sends an alert when content, prices or stock levels change.

Subscription · Uptime and monitoring

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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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One API with a single schema for pulling profiles, posts and engagement data from dozens of social networks, paid per credit.

Since 2026

Pay as you go · Developer tools · Developers

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A catalogue of ready APIs for public websites, plus a builder to make your own, for AI agents and apps.

Since 2026

Free plan · Developer tools · Developers

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Create branded short links and QR codes, track clicks and route visitors by device or country, for marketing teams.

Since 2026

Free plan · Marketing and social

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Fixes the mixed content and insecure content warnings a WordPress site shows after it moves to HTTPS.

Website builders

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Shows different text, popups or redirects to each WordPress visitor based on location, device or behaviour.

Free plan · Marketing and social

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Feature flags and A/B tests that read results from your own data warehouse, for software product teams.

Free plan · Website analytics · Software companies

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A REST API that drives real browsers and returns structured page data and diffs, for developers building AI agents.

Since 2026

Subscription · Developer tools · Developers

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An AI agent that edits KiCad schematics and boards and reruns electrical and design rule checks until they pass.

Since 2026

Free · Developer tools

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API that searches online stores and turns product pages into clean structured data that AI shopping agents can use.

Since 2026

Pay as you go · Developer tools · Developers

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API that pulls profiles, posts, comments and ad data from TikTok, Instagram, YouTube and other social sites.

Since 2025

Free plan · Developer tools · Agencies

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WordPress plugin for building popups and bars with display rules, A/B tests and email signup capture.

Marketing and social

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WordPress plugin that pins a floating button to blog posts so bloggers get more clicks on offers and contact links.

Free plan · Marketing and social · Creators and writers

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Build a pre-launch waitlist page where signups earn rewards for referring friends, with emails and A/B tests.

Since 2025

Free plan · Marketing and social · Online sellers

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WordPress plugin to A/B test pages, watch session recordings and heatmaps, and track WooCommerce revenue by variant.

Free trial · Website analytics · Online sellers

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Hosted API that turns web pages into Markdown or JSON and runs web searches, for developers feeding data to AI tools.

Free plan · Developer tools · Developers

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Lightweight headless browser built for scraping, automation and AI agents, available to install or as a hosted cloud.

Since 2025

Developer tools · Developers

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WordPress plugin for publishers to place, rotate, target and schedule ads from any network and track clicks.

Free plan · Marketing and social · Creators and writers

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A no-code popup tool for shops and websites to collect emails, show offers and win back visitors about to leave.

Free plan · Marketing and social

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A scraping API that fetches any page through proxies and headless browsers and returns HTML, text or structured JSON.

Free plan · Developer tools · Online sellers

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Cloud browsers, logins and functions that let developers have AI agents carry out tasks on websites.

Since 2026

Free plan · Developer tools · Developers

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Scrape, crawl and watch websites for changes and turn them into structured data via API or a no-code recorder.

Subscription · Developer tools · Developers

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Feature flags and remote config so software teams can release to user segments, run tests and switch features off fast.

Free plan · Developer tools · Developers

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Gets and renews free Let's Encrypt SSL certificates on cPanel shared hosting without command line work.

Free plan · Security and passwords

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An API and CLI that runs a browser agent to fill forms, scrape behind logins and do web tasks for you.

Since 2025

Developer tools · Developers