One of the long-lasting Internet products like email is email marketing, which can spread rapidly like a plague with high effectiveness, high speed and low cost. This makes it highly appreciated by numerous product/service salesmen around the world since the day of its birth. Because they firmly believe that -- among the countless emails sent every day, they can always receive response from some potential customers. If you need to send an email to a tremendous amount of customers at work, then a bulk/batch email sender will definitely save you too much time and effort.

Zello is a free (for personal use), small, easy-to-use, and very fast push-to-talk (instant voice chat) app for communications between smartphones, tablets, and PCs on Android, iPhone, Windows Phone, BlackBerry, and Windows platforms.

Among the top 10 Internet applications, mIRC was once the most popular IRC (Internet Relay Chat) client with the most comprehensive functions for Windows. It was first started in 1994, written in C/C++ by Khaled Mardam-Bey from Arab States (Palestinian and Syrian).

The Bat! is an email client (from Romania) specially designed for advanced email users who focus on secure email communication. It's often praised for its extreme flexibility and super powerful functions which can make you more efficiently deal with a large number of emails, so as to save you much valuable time.

eM Client is a all-powerful free/commercial desktop email client for Windows all platforms (XP+). In addition to being popular due to its modern and friendly UI, eM Client also provides many extra convenient features, such as calendar, tasks, contacts and even online chat.