From web apps to mobile clients, browser extensions, and chat bots, these products serve their users through JSON:API backends built on JsonApi4j.

TV Radar logo
Entertainment TV Radar Never miss a new episode.

A TV show tracker that follows thousands of series and alerts viewers before every new episode, season premiere, and finale. Watchlists, release calendars, and notifications stay in sync across every client.

  • Web
  • iOS
  • Android
  • Chrome Extension
  • Telegram Bot
Visit tv-radar.com →
GrammarMama logo
Education GrammarMama Check your grammar, Dear!

An adaptive grammar checker and language tutor. It explains every correction, tracks mistakes until they're mastered, and builds three personalized exercises a day with spaced-repetition vocabulary review, in 10+ languages.

  • Web
  • Chrome Extension
  • Telegram Bot
Visit grammarmama.com →
Text2Event logo
Productivity Text2Event From a short description to a calendar event.

Turns plain text, photos, or voice notes into ready-to-import calendar events and reminders, with recurring events and timezones. Works with Google Calendar, Outlook, Apple Calendar, and anything else that reads .ics.

  • Web
  • Chrome Extension
  • iOS Shortcuts
  • Android PWA
Visit text2event.com →

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