Unicode support, MSN v7 and MSN Personal Messages, Yahoo! custom messages...
New in v0.8.x:
Massive update for TabSRMM; important fixes for IRC, AIM, and Yahoo; updates to new file transfers UI (v0.8.0 Test Build 14); netlib changes to allow plugins to hook network read, write and log operations; improvements in utf8 processing in the core; improvements to the MSN protocol; several fixes for Jabber and AIM protocols; various other minor enhancements and bug fixes for earlier releases; Release Notes - Last Updated: 08.27.08 (v0.8.0 Test Build #21)
New in v0.7.x:
New "Check for Updates" menu item, and support for AIM skinnable icons (v0.7.5); two new authentication mechanisms for Jabber protocol: MD5 & NTLM, new plugin identification method, netlib layer revised to maintain the compatibility code, completely rewritten ‘genmenu’ module, massive fix for MSN file transfers, lots of fixes for ICQ, YAHOO & AIM protocols; various other minor enhancements and bug fixes for earlier releases; Release Notes - Last Updated: 06.03.08 (v0.7.7)
New in v0.6.8:
Improved plug-in compatibility with older networking plugins, fixes for some minor issues with chat windows, new option to enable and disable UPnP support, plugin compatibility with older networking plugins has been improved, new update notification system to notify you of new Miranda IM releases, various minor enhancements and fixes; Release Notes - Last Updated: 03.14.07 (v0.6.8)
New in v0.6:
UPnP support to improve file transfer and direct connect reliability through routers, improved support for UTF-8 strings, improved tabbed options support, various minor enhancements and fixes; Release Notes - Last Updated: 01.02.07 (v0.6)
New in v0.5: Unicode support, first Unicode protocols: MSN & Jabber, tabSRMM plugin, new AIM OSCAR protocol, up-to-date clist_modernb, numerous minor enhancements and fixes for YAHOO, CHAT3, Jabber, IcqOscarJ, and more; Release Notes - Last Updated: 07.31.06 (v0.5)
New in v0.4.0.2: Fix for problem with AIM plug-in connectivity (AIM protocol now uses TOC2, as TOC1 is blocked by AOL; Release Notes - Last Updated: 01.19.06
New in v0.4.0.1:
Support for MSN v7 and MSN Personal Messages, Yahoo! custom messages support, Jabber group chat support,
Various other enhancements and bug fixes for earlier releases (including fix to restore Windows 95 support); Release Notes - Last Updated: 06.20.05
Pros: Super memory-efficient, with quick and easy connectivity to all the big IM networks; plug-ins available for extending program's capabilities; freeware (open source); free of ads (no adware/spyware)
Cons: Basic version is stripped of all but the essential features. Also, light on documentation