Mac Apps for Communications
Top 3 Communications Apps for Mac
More Communications Apps for Mac

WhatsApp
FreeWhatsApp app on your Mac
MacProteus
Freeinstant messaging client for most major IM services
MacTwitch
FreeMac
AOL Desktop for Mac
FreeAll-in-one AOL client with integrated mail, AIM, browser.
Mac
Telegram
FreeChat in private and group chats, share photos and videos and stay connected with everyone at once.
Mac
iGlasses
Trial versionControl camera settings from iChat, Skype and other apps.
MacTelegram
FreeSecure and Versatile Messaging App
MacApple Messages
FreeDownload Messages Beta and get a taste of what's coming in OS X Mountain Lion. When you install Messages, it replaces iChat. But iChat services will continue to work.
Mac
Discord
FreeObtain power to create your own place to belong and share it with explicit soulmates you invite.
Mac
Colloquy
Trial versionQuality IRC & SILC client with style.
MacSignal
FreeSend high-quality messages anywhere in the world without SMS or MMS fees.
MacWeChat
FreeMac
EOS Webcam Utility
FreeTurn your compatible Canon camera into a high-quality Webcam.
MacX Lite
Trial versionMake phone calls from your computer.
Mac
Mail Designer 365
Trial versionCreate HTML e-mails and newsletters without any HTML coding.
MacKiwi for Gmail
FreeAccess each application, open new documents, and get back to recent documents with a single click.
MacMore Ichat Effects
FreeAdd additional effects to iChat and Photo Booth.
Mac
Mozilla Thunderbird
FreeTake advantage of best-adapted, highly customizable, lightning-fast, safely secured, and private email experience.
Mac
MAMP
FreeInstallation utility for Apache, MySQL, PHP.
MacSpamSieve
Trial versionBayesian spam filter for most email clients.
Mac
Xeoma Video Surveillance (32 bit)
Trial versionConnect cameras easily to powerful video surveillance from small to big systems.
Mac
MailHub
Trial versionRevolutionize email management.
MacUS Weather
FreeView numerous weather-related maps for the US and the rest of the world with dymanic zoom.
MacWebPeek
Trial versionTake screenshots on your Mac remotely via any Web browser.
Mac