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/numi-app-alternativesNumi is a beautiful text calculator for Mac.
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/qalculate-alternativesQalculate! is a multiplatform multi-purpose desktop calculator.
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/insect-alternativesHigh precision scientific calculator with full support for physical units.
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/fossify-calculator-alternativesIntroducing Fossify Calculator – your versatile and efficient tool for all your calculation needs.
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/free42-alternativesFree42, an HP-42S calculator simulator.
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/engineeringpaper-xyz-alternativesOnline app for engineering calculations. Solves systems of equations, checks and converts units automatically, supports plotting, and allows for the creation of a link to share your work. Free and open source, no registration required.
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/kalker-alternativesKalker is a calculator that supports user-defined variables, functions, ambiguous syntax, differentiation and integration. It runs on Windows, macOS, Linux, Android, and in web browsers (with WebAssembly).
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/calcpad-eu-alternativesFree and open source platform for math and engineering calculations .
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/concrete-calculator-online-alternativesThe most popular online concrete calculator to quickly estimate the volume and number of bags you need for your project.