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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Password manager that keeps encrypted credentials on your own devices, with you holding the keys, across phone and desktop.

Security and passwords · Individuals and families

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A shared POSIX file system for Linux and Mac servers that stores its data in S3 or other object storage, with no storage cluster to run.

Since 2015

Subscription · Developer tools · Developers

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Sends passwords, keys or files through encrypted links that delete themselves after being opened or after a set time.

Free · Security and passwords

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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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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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Shared online clipboard that syncs text and files between your devices through a private link that expires, no account required.

Free · Notes and knowledge · 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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Send files and folders of any size straight to your own devices or to other people, with transfers that resume after drops.

Free · Something else · Individuals and families

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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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A web workspace where analysts write SQL over market prices, macro series and SEC filings, then chart the results without Python.

Subscription · Data and spreadsheets

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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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A Mac clipboard history app with a Touch ID lock, encrypted history, text grabbing from images and reusable snippets.

One-off payment · Security and passwords · Individuals and families

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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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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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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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Self-hosted notes and checklists app that keeps everything as Markdown files on your server, with kanban boards.

Free · Notes and knowledge · Individuals and families

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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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Tracks stocks, crypto, property and private investments across brokers, with returns analysis and data encrypted on your device.

Since 2024

Free plan · Money and budgeting · Individuals and families

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Encrypted budgeting app for individuals that sorts money into pockets and warns which day a balance will go negative.

Since 2026

One-off payment · Money and budgeting · 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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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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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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Send large files and secrets through encrypted links that expire, carry passwords and show when the recipient downloads them.

Subscription · Documents and e-signature

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Encrypted storage and sharing of environment secrets for dev teams, with audit logs and a command line tool.

Free plan · Security and passwords · Developers

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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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An iPhone, iPad and Mac app that sends files of any size as end-to-end encrypted links that recipients open in a browser.

Something else · Individuals and families

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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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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 desktop app on top of rclone to browse, sync, mount, encrypt and back up files across 70 plus cloud storage services.

Free plan · Something else

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A cloud workspace for creating, running and sharing marimo Python and SQL notebooks for data work

Since 2024

Developer tools · Developers

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Backs up files on Windows PCs and Macs as encrypted, versioned copies to a cloud account or disk that you own.

Free trial · Security and passwords · Individuals and families

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Keeps environment variables and secrets for all your projects encrypted in one place and loads them from the terminal.

Subscription · Security and passwords · Developers

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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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Copy text, links or files on one device and paste them on another, with end to end encryption.

Since 2025

Free plan · Focus and productivity · Individuals and families

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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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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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Stores encrypted passwords, crypto keys and instructions and releases them to your chosen people if you stop checking in.

Since 2024

Free plan · Security and passwords · Individuals and families