MuseScore

Versatile music notation application that's totally free

Electronic Piano

Play more than 100 instruments with your PC's keyboard

Drums Room

Drums simulator for your computer

Piano Marvel

Entertaining and effective classes to learn to play the piano online

Finale

Advanced tool to compose scores

Overture

Create your scores and play them with VST instruments

EarMaster

Train your music hearing

Dany's Virtual Drum

Simple simulator to play the drums

Music Maker

An ideal program for non-professional musicians

PDFtoMusic

Listen to your favourite sheet music from PDF files

Synthesia

Learn how to play the piano while having fun

AP Tuner

Practical tuner that is specifically for string instruments

Mario Paint Composer

Compose music with sounds from Mario Bros

KB Piano

Play instruments with your PC's keyboard

Guitar Pro

Compose your own guitar scores and tabs

Crescendo Music Notation Editor

Write your music scores on the computer

Messenger for Desktop

Facebook Messenger on your Windows desktop

QQ International

The messaging application to communicate at global level

WA Web Plus

An extension to use WhatsApp Web with more functions

IMVU

Instant messaging and chats in 3D environments

Telefuel

Alternative Telegram client focused on productivity for PCs

Signal

Instant messaging and chat app that guarantees anonymity

WhatsApp Messenger

The official version of WhatsApp for Windows

imo

Talk to your friends from your PC

WhatsApp Viewer

Tool to view WhatsApp chats on PC

Windows Live Messenger

The departed Messenger by Microsoft

Facebook Messenger

Chat with your contacts from your desktop

WeChat

The Windows version of the popular Chinese messaging app

LINE

Instant messaging from your PC

WhatSender

Send multiple WhatsApp messages from your PC

Telegram Messenger

Telegram's desktop client for Windows