Napkin Calculator and Notepad Alternatives

Soulver

Soulver is a smart notepad with a built-in calculator. It gives instant answers to any calculations it finds in your text. It's a better way to work stuff out than...

Features:

• Side-by-Side View
• Calculators
• Currency Conversion
• Editable calculations
• Natural Language Processing
• Works Offline

Numi

Numi is a handy calculator app for Mac. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today...

Features:

• Side-by-Side View
• Calculators
• Currency Conversion
• Data export/import
• Extensible by Plugins/Extensions
• Support for Keyboard Shortcuts
• Sits in the MenuBar
• Natural Language Processing
• Real-time translation

OpalCalc

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...

Features:

• Currency Conversion
• Natural Language Processing
• Side-by-Side View
• Calculators
• Portable

Swift Calcs

The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with...

Features:

• Equation solving
• Formula Builder
• Symbolic Computation
• Algebra
• Transformation toolbox

Blabr

Interactive tables, sliders, plots and more. Scientific computing in the browser.

Caligator

A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like: - weight conversion - length conversion -...

Features:

• Calculators
• Unit converter

InstaCalc

An online calculator that allows the free form mixing of numbers and words, and saves calculations automatically.

Features:

• Calculators
• Online collaboration

Calculist

The open-source, web-based thinking tool that facilitates effective thinking for solving problems.

Features:

• List management
• Notetaking
• Task Management

Notepad Calculator

For jotting down quick calculations. Mix free form text with calculations and see the results appear in the right hand margin as you type.

Wakari

Wakari provides web-based Python data analysis via embedded iPython notebooks. Embedded IPython Notebook Work in the cloud with IPython notebook. You may also...