Learning Tools
SQL Editor
Run SQL instantly with zero setup
Python Editor
MicroPython runtime in your browser
JavaScript / TypeScript Editor
JavaScript / TypeScript runtime in your browser
Linux Terminal
Linux terminal environment in your browser
Question Bank / Flashcards
Load an Excel file and study it as a question bank and flashcards
Vocabulary List
Load an Excel file and use its terms as a vocabulary list
Developer Tools
SQL Editor
Run SQL instantly with zero setup
Mermaid Diagram Editor
Generate flowcharts and sequence diagrams with Mermaid
Python Editor
MicroPython runtime in your browser
JavaScript / TypeScript Editor
JavaScript / TypeScript runtime in your browser
Linux Terminal
Linux terminal environment in your browser
Regex Extractor
Regex tester with a metacharacter cheat sheet and ready-to-try sample patterns
Utility
Calculator
Browser-based calculator, no install needed
Regex Extractor
Regex tester with a metacharacter cheat sheet and ready-to-try sample patterns
Question Bank / Flashcards
Load an Excel file and study it as a question bank and flashcards
Vocabulary List
Load an Excel file and use its terms as a vocabulary list
AI Batch Photo Mosaic (Face Detection)
Auto-detect faces with AI and apply mosaic. Folder batch + manual touch-up supported
AI Video Face Mosaic
Auto-detect faces in videos and apply mosaic. Profiles & back-of-head covered via pose, audio preserved