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Online cutting plans with printable reports

Recipe calculations connected to a brewing batch

Bicycle gearing comparisons with cadence and tyre information

Household carbon arithmetic with visible assumptions

Natural-language calculation beside short notes

Scientific expressions with dimensions checked as types

Android scientific calculation with symbolic and graphical tools

A handheld-style scientific calculator for Android

A common language for computational mathematics

Numerical, symbolic and plotting tools for mathematical work

Symbolic tensor calculations for field-theory problems

Symbolic transformations for very large expressions

Portable symbolic algebra with numerical approximation

Calculations in algebraic geometry and commutative algebra

Computer algebra with graphs, geometry and statistics

Steady-state chemical flowsheet calculations

A simplified photovoltaic energy-production estimate

Nucleic-acid folding calculations with explicit constraints

Solar-system ephemeris calculations with documented time spans

Instrument-specific observing calculations

Depth-of-field and hyperfocal calculations

Editable calculation tapes with comments and recalculation

Optimization models inside Excel worksheets

Optimization modelling languages connected to Excel data