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High-precision numerical expressions with custom functions

Map fields and transformation functions between data formats

Compare mathematical curves with a shared time parameter

Generate a short sequence of gradient stops from supplied colours.

Manipulate common colour representations with a small Python interface.

Build a JavaScript colour picker from modular interface controls.

Edit one colour across familiar web formats and wide-gamut OKLCH.

Generate a chosen number of shades and copy their values.

Build a resizable colour picker with optional fields and alpha controls.

Compare a text and background pair with editable colour values.

Compare how six picker models organize colour choices.

Calculate returns, portfolio statistics and allocation weights in Python

Build and deploy full-stack web projects with Git integration and preview environments.

Make interactive art and visual projects for the web with a JavaScript creative-coding library.

Link team boards, backlogs, and roadmaps so cards follow work across groups.

Run Python tests with readable assertions, fixtures, parametrization, and failure reports.

Find production performance bottlenecks in PHP and Python applications, then inspect the responsible code paths.

A Rust framework for building web, desktop, and mobile apps from a shared codebase.

Define reusable build and test checks as code that can run locally or on a remote engine.

Build web pages and command-line programs with a general-purpose scripting language and interpreter.

A Java-based programmer’s editor with syntax modes, split views and an in-editor plugin manager.

A visual Flutter app builder with an in-app code editor for adding custom Dart behavior.

Inspect colour codes, build harmonies and extract palettes from images.

Explore data and create statistical summaries and graphics in R's language environment.