No moat. Still in business.

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

One-off payment · Marketing and social · Online sellers

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Graded Japanese stories at your JLPT level, with tap-to-define words, grammar notes, audio and flashcards.

Subscription · Courses and learning · Individuals and families

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Feature flags for software teams to roll out changes to chosen users, watch error rates and roll back bad releases.

Free plan · Developer tools · Developers

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Helps intermediate language learners reach fluency through spoken chats with an AI tutor, corrections and daily articles.

Courses and learning · Individuals and families

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An app for learning Japanese with an AI tutor, speaking roleplays, kanji, quizzes and a personal study plan.

Free plan · Courses and learning · Individuals and families

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Listening drills that help language learners catch spoken numbers, phone numbers and clock times in over two dozen languages.

Courses and learning · Individuals and families

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Short Spanish stories pitched at the words an A2 to B1 learner already knows, with unknown words brought back for review.

Free plan · Courses and learning · Individuals and families

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

Free plan · Marketing and social · Online sellers

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Builds sales and lead funnels inside WordPress and WooCommerce, with custom checkout pages, upsells and split tests.

Online shops · Online sellers

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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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Live voice lessons with an AI language tutor that corrects mistakes as you speak and remembers your past sessions.

Free trial · Courses and learning · Individuals and families

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Lets marketing and design staff describe web app changes in plain English and get them as GitHub pull requests for engineers to review.

Free plan · Developer tools · Software companies

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A language learning app for 77 languages where every lesson ends with you saying the sentence aloud and getting feedback.

Free plan · Courses and learning · Individuals and families

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Browser extension that swaps sentences on the pages you read into the language you are learning, scaled to your level.

Since 2024

Subscription · Courses and learning · Individuals and families

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An app for practising spoken conversations in 10 languages with an AI partner, then chatting with native speakers with translation.

Free plan · Courses and learning · Individuals and families

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Translates words and short phrases with examples and pronunciation, then saves them to a personal list for language learners.

Since 2026

Courses and learning · Individuals and families

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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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Builds popups for online stores, such as signup offers, exit discounts and spin wheels, by describing them to an AI agent.

Free plan · Marketing and social · Online sellers

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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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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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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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Mac app that pauses your shows and podcasts after each sentence to explain the translation, words and grammar.

Since 2026

Free plan · Courses and learning · Individuals and families

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A Chrome extension that translates X and Reddit posts and quizzes you on new words, for people learning English.

Subscription · Courses and learning · Individuals and families

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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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Language learners listen to free public domain audiobooks while following highlighted text and optional translations.

Free · Courses and learning · Individuals and families

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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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Ad-free app that teaches children aged 3 to 14 one of 19 languages through listening, speaking and reading along.

Since 2024

Free plan · 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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Mobile app where learners practise speaking a new language with AI characters and get pronunciation scores.

Since 2024

Courses and learning · Individuals and families

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Cookie consent banners and consent records for websites and apps, so businesses meet GDPR and similar laws.

Free plan · Legal and compliance

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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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Phone app for learning a language by listening to native podcasts with synced transcripts and tap-to-translate words.

Since 2025

Subscription · Courses and learning · Individuals and families

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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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A reading app for language learners that imports books, articles and videos, translates words and sends vocabulary to Anki.

Free · Courses and learning · Individuals and families

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Makes subtitles for your video and audio files so language learners can look up words and send them to Anki.

Since 2026

One-off payment · Courses and learning · Individuals and families

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Language learning app where you add the words you need and it builds practice sessions around them, in 20+ languages.

Since 2025

Free · Courses and learning · Individuals and families

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A browser extension for Chinese learners that puts words from your level into English pages, with readings and meanings on hover.

Courses and learning · Individuals and families

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Deploys apps from a GitHub repo onto a server in your own cloud account, with HTTPS and redeploys on each push.

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.

Free plan · Marketing and social

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A local desktop editor for writing language courses with lessons and self-marking exercises, plus a free app to study them.

Free · Courses and learning · Creators and writers

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WordPress plugin that records heatmaps, sessions, funnels and form drop-off, storing all data on your own site.

Free plan · Website analytics

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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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Video player for language learners that shows two subtitle tracks at once, generates subtitles and translates them live.

Free · Video and audio · Individuals and families

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Flash card app for learners to keep their own word lists and practise them with spaced repetition on Apple devices.

Courses and learning · Individuals and families

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A WordPress plugin for top bars and popups with countdowns, coupons and signup forms, plus click stats and A/B tests.

Free plan · Marketing and social