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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

Linked mathematical views for algebra, geometry and graphs

Mathematical problem entry with a structured symbol palette

Cloud-service cost estimates with inspectable assumptions

Azure cost scenarios from selected services and usage

Room-mode calculations for rectangular and shaped rooms

Computational algebra and number-theory software

A free online tool that estimates dog breeds from a photo.