KCalc Alternatives

Qalculate! is a multiplatform multi-purpose desktop calculator.

Open Source

SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Ideanote is the #1 rated Idea Management solution for companies of all sizes. Collect, develop and manage more of the right ideas from customers and employees to drive your growth.

Try for free freemium $49.0 / Monthly (Business Plan, 15 Users)

Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

Blockpad is spreadsheet software re-imagined for engineering. It gives engineers a better way to create, manage, and share critical calculations.

Online 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.

Open Source free

Numi is a beautiful text calculator for Mac.

Open Source

OpalCalc is a brand new type of calculator for the PC.

Calculator for the GNOME Desktop Environment, formerly known as gcalc (and gcalctool CLI).

A practical calculating tool, unit conversion utility, and programming language designed to make physical calculations simple.

Real Time.

RealCalc Scientific Calculator

Mathcad is engineering calculation software that drives innovation and offers significant process...

Graph is an open source application used to draw mathematical graphs in a coordinate system.