Signal

Instant messaging and chat app that guarantees anonymity

IMVU

Instant messaging and chats in 3D environments

WhatsApp Messenger

The official version of WhatsApp for Windows

WhatsApp Viewer

Tool to view WhatsApp chats on PC

WeChat

The Windows version of the popular Chinese messaging app

Windows Live Messenger

The departed Messenger by Microsoft

WhatSender

Send multiple WhatsApp messages from your PC

Messenger for Desktop

Facebook Messenger on your Windows desktop

imo

Talk to your friends from your PC

Facebook Messenger

Chat with your contacts from your desktop

QQ International

The messaging application to communicate at global level

WA Web Plus

An extension to use WhatsApp Web with more functions

LINE

Instant messaging from your PC

Telegram Messenger

Telegram's desktop client for Windows

WhatsappTime

Alternative WhatsApp client for Windows

Telefuel

Alternative Telegram client focused on productivity for PCs

PASW

One of the most powerful statistic solutions on the market

WinPlot

Generate 2D and 3D graphics

Microsoft Mathematics

Solve mathematical operations with this free tool

IBM SPSS Statistics

Poweful software to collect and analyze statistical data

GeoGebra

Software to learn maths at all levels

MathType

Complete mathematical equation and formula editor

Octave

Applied calculus software very similar to MATLAB

GeoEnZo

Digital board to teach and learn maths

Mathcad

Software for engineering calculations

Minitab

One of the best statistical calculation programs

MATLAB

Maths software tool for PC

Statgraphics

Carry out statistical analyses on your data

Derive

Powerful tool for symbolic mathematic calculations

Mathematica

Platform for computational development

Maple

Solve complex mathematical operations