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Research stocks with interactive charts, fundamentals and IBD ratings

SQL exercises running against SQLite in the browser

A browser simulation for exploring Git repositories

Free courses and study resources from The Open University.

Listening lessons with transcripts, vocabulary and quizzes.

A structured German course with tutor and learner contact.

A multilingual route into Esperanto.

Illustrated programming lessons with browser coding practice

Realtime voice models and hosted LLM inference for consumer applications.

Compress and convert website images

Optimize images through a web tool or API

Workout videos and calendar-based exercise programs

Cloud browsers that let AI agents work on the web.

Document intelligence platform that turns PDFs, images, and DOCX files into labeled JSON.

German grammar practice with explanations and progress tracking.

AI language tutor with lessons that adapt to you

Scientific expressions with variables and numerical calculus

Marketing attribution software for B2B SaaS and agencies

Open source agent that keeps your apps running 24/7.

Satellite imagery and interactive weather maps

AI-powered visual workspace for team collaboration and product development.

Regex lessons beside a cheatsheet and playground

Linux media encoding through a GUI or unattended scripts

Preview a 3D model before exporting another format