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Subject calculators and a custom calculator builder

A compact unit converter with adjustable displayed precision

Scientific and everyday calculations with units

A .NET unit-testing framework for C#, F#, and Visual Basic projects.

Convert compatible quantities and inspect unit definitions from a CLI

A keypad calculator with clear, memory and percentage controls

A Windows Python IDE pairing a script editor with an interpreter, debugger, project tools and unit-test interface.

Elixir's built-in unit-testing framework for test cases, assertions, callbacks, and doctests.

Validate and convert coded measurement-unit expressions

Free voice calculator you speak to, in the browser or on iPhone.

A graphing-calculator emulator in the browser

A TI graphing-calculator emulator for classroom explanation

Everyday calculation categories with a simple keypad

Run Android component and resource tests in a JVM without launching an emulator for every test.

Continuously runs .NET tests in Visual Studio or Rider and reports results as code changes.

Generate Java unit-test code from IntelliJ classes and methods, with CLI and CI options in paid editions.

A C++ test framework for unit tests, behavior-driven cases, and basic micro-benchmarks.

A Java IDE that lets learners explore classes and objects while writing code.

Automate unit and regression testing for embedded C/C++ software, from test design to target execution and coverage analysis.

An iOS personal knowledge base built from notes, lists, media, and other modular blocks.

Develop Python in a project-aware desktop IDE with a debugger, test runner, and optional coding-agent tools.

A natural-language calculator for units, dates, finance, and developer math.

Unit conversion organized by physical and everyday categories

Scientific expressions with dimensions checked as types