When comparing Miranda vs Mastodon, the Slant community recommends Mastodon for most people. In the question“What are the best XMPP clients for Windows?” Mastodon is ranked 3rd while Miranda is ranked 4th. The most important reason people chose Mastodon is:
Ranked in these QuestionsQuestion Ranking
Pro Requires no installation and is very lightweight
Very light on system resources and extremely fast, Miranda IM requires no installation and can be made to fit on a single floppy disk or USB drive
Pro Insanely customisable
You can see all the plugins available for Miranda here.
Pro Social publishing
Pro Actively developed
Pro Jabber Texting
Pro Open Standard
Pro Open Source
Con Lacks OMEMO encryption
The de facto standard for Jabber Texting [xmpp].