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A browser-based shared whiteboard with real-time collaboration, URL sharing, and export.

A zoomable handwriting and planning notebook with sub-pages and document annotation.

Browser vector drawing with point controls and editable SVG handoffs

Write HTML, CSS, and JavaScript in a browser editor with an updating preview.

A live team canvas with sticky notes, shapes, connectors, freehand drawing, frames, and workshop templates.

Teach with a free, open-source interactive whiteboard for schools and universities.

An Android handwriting workspace with notebooks, PDF markup, sticky notes, and corkboards.

Type Indian scripts through phonetic or standard layouts

Type Vietnamese with configurable keyboard methods

Use Bangla input methods with dictionary suggestions on Linux

Math input with worked examples across several subjects

A capture tool that saves notes, links, tweets and video highlights without switching apps.

Multi-system emulation for tool-assisted play and analysis

Handwritten notation with connected digital parts

Map controllers to keyboard, mouse and virtual inputs

Use a joystick as keyboard and mouse input on Windows

Build interactive terminal applications in Go with an event-driven model, update, and view loop.

A Python property-based testing library that generates inputs to challenge the properties your code should preserve.

Replace text in files or streams with a compact, readable command-line syntax.

David Jonathan Ross’s type library with full-featured font trials.

Collect, process, and route logs, metrics, and traces with a lightweight telemetry agent.

Compile, run, debug, and share small programs in a browser-based editor.

Generate a short sequence of gradient stops from supplied colours.

A Java teaching IDE where learners program actors and see their code run inside interactive worlds.