No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Burning Vocabulary
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
- Nuenki
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
- Sparkle
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
- Yaply
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
- NeonLingo
A Chrome and Edge extension that translates words you select on any page and brings them back later so you learn them.
Since 2024
Free plan · Courses and learning · Individuals and families