SpeedCrunch has been discontinued. One of the most popular alternatives is Qalculate!, which is free and open source. Other popular alternatives are OpenCalc, GeoGebra Scientific Calculator, Numbat and fxSolver. There's no shortage of Calculators like SpeedCrunch, with more than 100 alternatives for Android, Windows, the web, iPhone and Mac.
OpalCalc is a brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows natural language in the sum and multi-line support so you can go back and adjust your previous calculations on the fly.
Sicyon is an all-in-one scientific calculator for every student or professor, researcher or developer - everybody doing physics or chemistry / science or engineering using formulas and tables of constants.
A calculator with syntax highlighting that supports user-defined variables and functions, math-like syntax, and some more advanced operations such as derivation and integration (estimate), and complex numbers.
Free scientific calculator which saves you time and frustration by providing unique easy to use tools.
United States
Calcul.io offers realtime calculator with notepad like interface and advanced features like unit conversions, currency rates or date time math.
Ever wanted to work something out, but your default calculator isn't powerful enough, and it's not worth creating a spreadsheet for?
Programmable scientific calculator which has more than 150 mathematical functions and all of them return as many digits as you need. It can calculate with real numbers, complex numbers, fractions, vectors, matrices. Commands if, goto and print can be used to create scripts.
Czechia
EU
Calculator with percentages, powers and functions. History with comments that is synced across all your devices. Cursor for editing anywhere. Simple interface with dark and light themes.
Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that's really useful in the real world.
Calculator software try too hard to imitate the real thing. They end up big and clunky and their limitations are carried on. Kalq is a user experience experiment to discover an elegant solution to everyday calculations.
