Swift Calcs is described as 'The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with colleagues and clients. No special syntax, no software, no headaches, no kidding' and is an website in the Education & Reference category. There are more than 25 alternatives to Swift Calcs, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android. The best alternative is LaTeX, which is both free and Open Source. Other great sites and apps similar to Swift Calcs are MATLAB (Paid), Overleaf (Freemium, Open Source), Mathematica (Paid) and fxSolver (Free).
Wakari provides web-based Python data analysis via embedded iPython notebooks. Embedded IPython Notebook Work in the cloud with IPython notebook. You may also publish your notebooks or fork a notebook directly to your workspace.
Blockpad is spreadsheet software re-imagined for engineering calculations. It's primarily a word processor where you enter formulas that appear in math notation. It also includes units intelligence, spreadsheet tables, sketching, solvers, and more.
Napkin is a unique mix between a notepad and a calculator. Doing quick calculations on your phone has never been easier! Features - Auto-save - Support for Variables - Auto-magically evaluates your math expressions - Napkin is fast - Dark/Light theme - No Ads
FormulaDesk Math is an Excel add-in that brings real symbolic math to Excel. View formulas as equations, plot formulas…instantly. All the tools that engineers and students need every day, now inside Excel.