WinPlot

Generate 2D and 3D graphics

MathType

Complete mathematical equation and formula editor

Scilab

The most comprehensive tool to perform numerical calculations

Octave

Applied calculus software very similar to MATLAB

Microsoft Mathematics

Solve mathematical operations with this free tool

PASW

One of the most powerful statistic solutions on the market

Euler Mathematical Toolbox

Complete numerical and algebraic computation system

Mathematica

Platform for computational development

Statgraphics

Carry out statistical analyses on your data

Maple

Solve complex mathematical operations

Derive

Powerful tool for symbolic mathematic calculations

GeoEnZo

Digital board to teach and learn maths

Geometry

Complete trigonometry and geometry calculations easily

Gretl

Application for econometric analyses

Graphing Calculator 3D

Draw any 2D or 3D function almost instantly

Mathcad

Software for engineering calculations

Airtable

Application for the management of business projects

GTD-Free

Full control over all pending tasks

Microsoft Sticky Notes

Sticky notes for your PC's desktop

Microsoft To-Do

An efficient task manager designed by Microsoft

Wunderlist

Useful and simple task manager

Trello

Organize pending tasks and ideas

Focus To-Do

Manage your productivity with the help of the Pomodoro technique

Glass Notepad

A notepad with transparencies

MetaMoJi Note Lite

Keep all your ideas and notes

Notion

Advanced task, list and note management for PC

Evernote

Capture your ideas as notes

TickTick

Teamwork oriented task manager

InfraDrive Digital Diary

Complete personal diary with many tools

Post It Notes

Program to create virtual post-its and notes

MeisterTask

Team-oriented task manager