No moat. Still in business.

0

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

0

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

0

Free tool for researchers and students to collect sources while browsing, organise them and build citations and bibliographies.

Free plan · Notes and knowledge · Individuals and families

0

Hosted Postgres that clones databases in seconds so each developer, CI run or agent gets its own copy, and idles at zero.

Since 2022

Developer tools · Developers

0

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

Uptime and monitoring · Developers

0

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

Free plan · Security and passwords

0

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

Free plan · Website builders

0

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

0

Chrome extension that lets you tick off watched episodes or videos on several popular sites and keeps that history synced.

Since 2020

Free plan · Focus and productivity · Individuals and families

0

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

0

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

0

Teaches English, Spanish, French and other languages through song lyrics, with spaced repetition for new words.

Since 2024

Courses and learning · Individuals and families

0

Lightweight note app for phone and desktop that syncs through your own storage backend and encrypts notes end to end.

Notes and knowledge · Individuals and families

0

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

Since 2023

Data and spreadsheets

0

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

0

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

Since 2024

Courses and learning · Individuals and families

0

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

0

Serverless Postgres that keeps each customer's data and vector embeddings in its own virtual database, for teams building B2B SaaS.

Developer tools · Developers

0

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

0

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

Courses and learning · Individuals and families

0

Lets non-technical staff view, edit and query Postgres tables in a spreadsheet-style screen, using the database's own permissions.

Free · Data and spreadsheets

0

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

0

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

Since 2026

Subscription · Courses and learning · Individuals and families

0

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

0

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

Since 2026

Free plan · Developer tools · Developers

0

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

Website builders

0

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

Since 2026

Free plan · Courses and learning · Individuals and families

0

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

0

Self-hosted tool that runs scheduled PostgreSQL, MySQL and MongoDB backups to cloud storage and alerts your team.

Since 2025

Free · Developer tools · Developers

0

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

0

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

0

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

0

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

0

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

Since 2026

Free · Courses and learning · Creators and writers

0

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

Since 2026

Free plan · Courses and learning · Individuals and families

0

Backs up Supabase databases and storage files to your own bucket on a schedule, then runs restore drills to prove they work.

Free plan · Developer tools · Developers

0

A Chrome extension that pins sticky notes to any web page and keeps them in one searchable notebook across visits.

Since 2025

Free plan · Notes and knowledge · Individuals and families

0

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

Since 2026

Free plan · Developer tools · Developers

0

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

Since 2026

Subscription · Courses and learning · Individuals and families

0

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

Since 2026

Free plan · Courses and learning · Individuals and families

0

Learn to read Arabic with alphabet lessons, graded stories and flashcards that schedule reviews around your memory.

Since 2026

Free plan · Courses and learning · Individuals and families

0

Proxy that sits in front of PostgreSQL to pool connections, spread reads across replicas and shard data.

Developer tools · Developers

0

Learn any of 75 or more languages from almost any starting language, including rare ones, with a school option too.

Free plan · Courses and learning · Individuals and families

0

Hosting that deploys a frontend, backend and Postgres database from a repo, a folder or an AI coding assistant.

Since 2026

Free plan · Developer tools · Developers

0

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

Since 2026

Free trial · Courses and learning · Individuals and families

0

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

0

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

Free · Courses and learning · Individuals and families

0

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

Since 2026

Courses and learning · Individuals and families