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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Make your own flashcard decks and review them on a spaced repetition schedule in the browser.

Since 2015

Free plan · Courses and learning · Individuals and families

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Library of recorded iOS app screens, onboarding and paywalls that app teams and their AI agents can search.

Since 2018

Design and images · Developers

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Desktop data analysis app where you ask about your data in plain English and get Python code, charts and notebooks run on your computer.

Since 2017

Data and spreadsheets

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Gives static website forms a hosted endpoint that stores submissions, filters spam and sends alerts to email, Slack or Discord.

Forms and surveys · Developers

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Builds automated workflows and AI agents that connect hundreds of apps, as a hosted service or on your own servers.

Free plan · Automation and integrations

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Upload an HTML page, folder, Markdown file or PDF and get a public HTTPS link in seconds, handy for AI-made pages.

Free plan · Website builders · Individuals and families

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Lets software teams add guided tours, setup checklists, NPS surveys and banners inside their app, self-hosted or hosted.

Customer support · Software companies

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Checks single addresses or whole lists for syntax, mail server and mailbox problems, by upload or API, with an email finder too.

Free plan · Email marketing

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Logs errors from .NET and JavaScript apps, checks site uptime and scheduled jobs, and notifies your team in chat or email.

Free trial · Uptime and monitoring · Developers

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Helps students sort courses, tasks, class schedules, flashcards and files into colour-coded folders.

Free · Focus and productivity · Individuals and families

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Website analytics that stores no personal data so no consent banner is needed, with carbon estimates and AI agent access.

Free plan · Website analytics

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An iPhone app that takes Japanese learners from beginner to fluent with one new sentence per flashcard and spaced review.

Since 2015

Courses and learning · Individuals and families

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An API that returns live flight prices and airline booking links for developers building travel search or price alerts.

Since 2015

Free plan · Developer tools · Developers

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Note app for students that builds flashcards, quizzes and summaries from notes and PDFs with spaced repetition.

Since 2021

Free plan · Courses and learning · Individuals and families

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A browser extension that saves and highlights words you look up on web pages, then drills them with flashcards.

Since 2020

Free plan · Courses and learning · Individuals and families

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A study app for students with spaced repetition flashcards, made from notes and PDFs, and scheduled around your calendar.

Free plan · Courses and learning · Individuals and families

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Data API for developers and analysts covering decades of company financials, ratios, earnings call transcripts and share prices.

Free plan · Developer tools · Developers

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Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.

Since 2023

Data and spreadsheets

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Flashcard app for iPad and iPhone where students draw, type or add images to cards and review them with spaced repetition.

Since 2024

Courses and learning · Individuals and families

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A content management system that stores pages as plain files, not a database, with a page builder for designers running small sites.

Free · Website builders · Agencies

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Students turn class notes or a PDF into a practice test that marks itself and explains each question they got wrong.

Since 2024

Free plan · Courses and learning · Individuals and families

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Flashcard app that uses spaced repetition so learners review hard cards more often, with sync between devices.

Courses and learning · Individuals and families

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Flashcard maker that schedules reviews by spaced repetition, with dictionaries and text to speech for language learners.

Since 2024

Free plan · Courses and learning · Individuals and families

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Send documents out for e-signature and pay only for the ones that get signed, with three free each month.

Since 2024

Free plan · Documents and e-signature

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Publishes static sites by drag and drop or through an AI agent, with custom domains, HTTPS and one-click version restore.

Free plan · Website builders · Individuals and families

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A WordPress plugin that exposes your site to AI assistants over MCP so they can edit and maintain it, for agencies and freelancers.

Free plan · Website builders · Agencies

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Checks lists of up to 100,000 URLs in the cloud, retries links that block bots, and can run scheduled broken link checks.

Since 2026

Subscription · Uptime and monitoring

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Copies chosen Jira projects and Confluence spaces into a local SQLite file so you can search offline and run SQL on your backlog.

Developer tools · Developers

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Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.

Uptime and monitoring · Developers

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Connects AI coding assistants to a WordPress site so they can build and edit native Divi 5 pages you keep editing visually.

Free plan · Website builders · Agencies

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A budgeting app that works out how much you can spend each day and adjusts the figure after you overspend.

Since 2026

Free plan · Money and budgeting · Individuals and families

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A shared board of links, notes and briefs that teammates and AI chat tools can all read as project context.

Since 2026

Free plan · Notes and knowledge · Developers

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Shared SQL editor for data teams that stores common queries and sends scheduled results to Google Sheets or Slack.

Since 2026

Free trial · Developer tools · Developers

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A note app for desktop and phone that records and transcribes, then answers questions using your own notes.

Since 2026

Notes and knowledge · Individuals and families

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Persistent cloud virtual machines with up to 60 vCPUs and optional GPUs, which coding agents drive via CLI or MCP, charged per minute.

Since 2026

Pay as you go · Developer tools · Developers

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Gives each AI agent purchase its own single-use virtual card, with spending limits and approval rules you set.

Since 2026

Subscription · Payments and checkout · Individuals and families

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Gives coding agents a version-aware search index of open-source code, docs and package data through an API and MCP server.

Since 2025

Developer tools · Developers

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Converts any web page into compact markdown that coding agents can read, through a URL prefix, CLI or API.

Since 2026

Free plan · Developer tools · Developers

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Learn Japanese or Korean by tapping words in YouTube videos, manga and books, with flashcards that track what you know.

Since 2025

Free plan · Courses and learning · Individuals and families

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Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.

Since 2026

Free plan · Developer tools · Developers

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Learn English words from books you are reading, with ready-made flashcards, quizzes and a word bank.

Since 2025

Free plan · Courses and learning · Individuals and families

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WordPress plugin for building a help center knowledge base, using AI to draft docs and answer visitor questions.

Free plan · Customer support · Software companies

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API that fetches Google results and answers from ChatGPT, Gemini and others as clean data, for SEO tracking.

Since 2025

Subscription · SEO · Agencies

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Keeps documentation in GitHub repos in step with the code and shares that context with teammates and AI coding agents.

Since 2026

Free plan · Developer tools · Developers

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Reads your Anki flashcards aloud through headphones and grades your spoken answers, with an AI tutor for follow-up questions.

Since 2026

Free plan · Courses and learning · Individuals and families

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Hosted chat rooms where AI coding agents owned by teammates, clients or partners can send each other messages.

Since 2026

Developer tools · Developers

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Lets Apple app developers view their sales, rankings, ad spend and reviews on iPhone, iPad or Mac, even without a connection.

Since 2026

One-off payment · Website analytics · Developers