No moat. Still in business.

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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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Generates searchable API docs from C++ code and Markdown pages, with optional hosting, for C++ teams.

Since 2021

Developer tools · Developers

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A chat widget for service business websites that answers visitor questions from your own content and gathers inquiry details.

Since 2020

Free plan · CRM and sales

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Turns videos into interactive ones with questions, buttons and branching, then reports what each viewer watched and answered.

Since 2018

Subscription · Video and audio · Agencies

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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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Trains a chat agent on your site, files and docs so it can answer customer questions and capture leads on your website.

Since 2024

Subscription · Customer support

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WordPress plugin that hides part of a post behind a read more toggle, with lead capture and engagement tracking.

Subscription · Website builders · Creators and writers

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A WordPress plugin for building opt-in, coupon and announcement popups with triggers, targeting and stats.

Free plan · Marketing and social

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Builds forms and quizzes from a prompt, PDF or pasted text, with scoring, logic, payments and embeds for businesses.

Since 2024

Forms and surveys

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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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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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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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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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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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AI agent that answers customer questions on your site, WhatsApp and phone, captures leads and passes chats to staff.

Free trial · Customer support

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WordPress plugin that shows MLS property listings on an estate agent's own site, with lead capture and a basic CRM.

Free trial · CRM and sales · Property and estate agents

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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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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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Build step-by-step forms for surveys, leads and quizzes, with logic, webhooks and unlimited responses on the free plan.

Free plan · Forms and surveys

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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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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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A website chat widget that answers visitors with AI, hands off to staff and captures leads across WhatsApp and email.

Free plan · Customer support

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A website chatbot that learns from your pages and documents, answers visitors and passes harder chats to your staff.

Free plan · Customer support

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Builder for landing and lead capture pages with templates, AI drafts and A/B testing to improve conversions.

Subscription · Website builders

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Software teams build clickable product demos and stable demo sandboxes to embed on their site or use in sales.

Since 2025

Free trial · Marketing and social · Software companies

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WordPress plugin that shows YouTube, Vimeo and self-hosted videos in galleries, with member-only access and lead capture.

Free plan · Video and audio · Creators and writers

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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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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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Add a chat widget to your website that asks visitors questions, collects leads and bookings, and answers from your own content.

Free plan · Forms and surveys

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Turns PDFs and notes into flashcards you can review and edit, then export to Anki, Mochi or SuperMemo.

Since 2026

Subscription · Courses and learning · Individuals and families

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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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Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.

Free plan · Website builders

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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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WordPress plugin for opt-in popups and embedded forms that help you grow an email list, with split tests.

Subscription · Marketing and social

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Build chat flows from blocks without code and put them on your site or WhatsApp to capture leads or answer questions.

Free plan · Forms and surveys

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WordPress plugin for estate agents that puts MLS listing search on their site and collects leads from people browsing homes.

Free trial · CRM and sales · Property and estate agents

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WordPress plugin for adding price estimate calculators to a site, emailing PDF quotes and collecting leads from service customers.

Free plan · CRM and sales · Trades and home services

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A WordPress plugin for designing popups directly in the Elementor editor, with triggers and animations, no Pro licence needed.

Free plan · Website builders

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Save new words from what you read or watch, get AI definitions and examples, then review them with FSRS flashcards on Apple devices.

Since 2025

Free plan · Courses and learning · Individuals and families

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A language app where a partner or friend fills in words, audio and sentences for you to study, on iPhone and Android.

Since 2025

Courses and learning · Individuals and families

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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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Pools GPUs and CPUs from many cloud providers and your own servers so developers can run large data jobs in one place.

Since 2026

Developer tools · Developers