A compact ICQ clone with lots of handy (and not very much so) plug-ins, "Miranda IM is designed to be resource efficient and easy to use. It uses very little memory and requires no installation. Just unzip and run! This also makes it ideal for users that want to run their messenger client from a removable storage such as an USB memory stick. It can even be stored on a floppy disc if not too many plugins are used. The powerful plugin system makes Miranda IM extremely flexible. Only the most basic features are built in, but there are currently more than 350 plugins available for download that allows users to extend the functionality in Miranda IM. Plugins can be installed to add support for ICQ, AIM, MSN, Jabber, Yahoo, Gadu-Gadu, Tlen, Netsend and other protocols" (that was from the developers' description.)
Voice Chat 2.0 A voice chat with a simple interface » 28.08.2003 - 193 KB - 98/ME/XP - Free
Google Hangouts 2017.110.418.2 Google Hangouts enables you to call or send instant messages to your friends for free anytime, anywhere in the world » 30.01.2017 - 283.2 KB - Windows XP/7/8/10 - Free
MP3 Skype Recorder 4.31 This software is designed to record Skype calls even ones over landlines. The recordings can be saved at the desired bit-rate and in mono or stereo » 27.04.2017 - 6.06 MB - Windows 7/8/10 - Free
MSN Tools 2.6 The Tools permit the user to automatically: launch programs upon receipt of messages; check mailboxes; forward messages from mailboxes to an MSN messenger designated account; forward messages to mailboxes; forward messages to another MSN messenger account; and more » 12.10.2001 - 589 KB - 98/ME/XP - Shareware, $10
Intranet Chat 1.20 A program for messaging and chatting in local area networks » 25.04.2002 - 902 KB - 98/ME/2K/XP - Free
ICQ 1.111 beta One of the first versions. Released in 1996 » 14.12.2002 - 1.35 MB - 2K/XP - Free
Windows Live Messenger 2009 14.0.5027.908 Windows Live Messenger lets you chat online via text, voice or even video conversation - in real time - with your friends, family or colleagues. It's faster than e-mail and is a great choice for conversations and the perfect alternative when you can't be there in person » 23.09.2008 - 990.5 KB - Windows Vista/XP - Free
X-Chat 2.8.7f XChat is a useful IRC (chat) application for Windows and UNIX (Linux/BSD) operating systems » 01.01.2009 - 970.13 KB - Windows XP/7/8 - Trial, $19.95
mIRC 7.49 A highly configurable and highly popular IRC (Internet Relay Chat) client "with all the goodies other clients on UNIX, Macintosh and even on Windows offer" » 25.05.2017 - 2.61 MB - Windows XP/7/8/10 - Trial, $20
QIP 2012 4.0.9384 QIP is a freeware program for online communication. » 14.08.2017 - 13.78 MB - Windows XP/7/8/10 - Adware, Adware
Bopup Messenger 184.108.40.20639 A feature-packed corporate instant messenger for effective communications over a local network » 06.08.2017 - 1.91 MB - Windows XP/7/8/10 - Trial, $12.90
Bopup Observer 220.127.116.1110 Bopup Observer is a WinPopup compatible instant messenger that allows you only receive messages and files over LANs » 06.08.2017 - 1.67 MB - Windows XP/7/8/10 - Trial, $
Miranda IM 0.10.72Softoogle's Pick! A compact ICQ clone with lots of handy (and not very much so) plug-ins » 04.08.2017 - 7.92 MB - Windows XP/7/8/10 - Free
Trillian 6.0.61 A full-featured, stand-alone, skinnable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC » 25.07.2017 - 19.07 MB - Windows 7/8/10 - Shareware, $20
ooVoo 18.104.22.168 Connect with your friends, family, and business associates » 22.07.2017 - 60.32 MB - Windows 7/8/10 - Free
ICQ 10.0.12201 With ICQ Instant Messenger you can video/audio chat, send email, SMS and wireless-pager messages, as well as transfer files and URLs » 22.07.2017 - 50.86 MB - Windows 7/8/10 - Free
Camfrog 6.18.622.7654 Camfrog Video Chat allows you to join real streaming video chat rooms where you can hear, see, and chat with many people at a time. Instant message a user to get to know them before you Webcam chat, and add them to your contact list. This videoconferencing software also works behind most firewalls and routers » 18.07.2017 - 46.38 MB - Windows XP/7/8/10 - Free
Skype 22.214.171.124Softoogle's Pick! A program that lets you make free calls over the Internet to anyone else who also happens to have Skype » 29.06.2017 - 55.22 MB - Windows 7/8/10 - Free
mIRC 7.49 A highly configurable and highly popular IRC (Internet Relay Chat) client "with all the goodies other clients on UNIX, Macintosh and even on Windows offer" » 26.05.2017 - 2.61 MB - Windows XP/7/8/10 - Trial, $20
"Privacy Mantra keeps your computer clean from online and offline tracks. Most people are unaware of that every web site they have visited remains in the undeletable index.dat file, even after the Internet history and cache has been removed. Your system is also keeping information of executables you run, movies you watch and documents you open. Some of these prints can't be deleted manually as they are locked by the system.
Privacy Mantra will erase and wash away most privacy threats in your machine including, Internet history, cache, cookies, index.dat files, auto-complete forms, search assistant, recent documents, open/save dialogs, run files, Mozilla Firefox, Google Toolbar and more. Privacy Mantra allows the user to easily download the latest database of threats. This reliable cleaner will not only protect your privacy but also free disk space by deleting junk files."
Downside: No unrecoverable deletion option, i.e. everything deleted with the program can be undeleted with special utilities.