Windows Live Mail

Microsoft's multi-account email client

Outlook Connector

Use your Hotmail accounts straight from Outlook

Yahoo Mail

Access to your Yahoo email account

Mail Bomber

One of the best massive email delivery programs

Turbo Mailer

Send mass emails

ICQ

Complete instant messaging client integrated with social networks

Zimbra Desktop

Manage all your accounts from the same application

Chord Scale Generator

All the scales and chords a your reach

Trillian

A multiplatform chat client

Free Email Extractor

Easily gather email addresses

Pirch

One of the most popular IRC clients of its time

Visual Chat

Create your own chat channel in 3D

Guitar Tuner

How to tune your guitar or any other string instrument

IncrediMail

Customize your email's appearance and give your friends a surprise

Microsoft Outlook

Microsoft's email client

mIRC

Chat on IRC with this great client

Facebook Messenger

Chat with your contacts from your desktop

WeChat

The Windows version of the popular Chinese messaging app

Telefuel

Alternative Telegram client focused on productivity for PCs

WhatSender

Send multiple WhatsApp messages from your PC

Telegram Messenger

Telegram's desktop client for Windows

imo

Talk to your friends from your PC

Messenger for Desktop

Facebook Messenger on your Windows desktop

Signal

Instant messaging and chat app that guarantees anonymity

WhatsApp Messenger

The official version of WhatsApp for Windows

WA Web Plus

An extension to use WhatsApp Web with more functions

WhatsApp Viewer

Tool to view WhatsApp chats on PC

LINE

Instant messaging from your PC

Windows Live Messenger

The departed Messenger by Microsoft

IMVU

Instant messaging and chats in 3D environments

QQ International

The messaging application to communicate at global level