Defunct mobile instant messaging clients

Mxit (pronounced "mix it") was a free instant messaging application developed by Mxit (Pty) Ltd. in South Africa that ran on over 8,000 devices, including feature phones, Symbian S60, Android, BlackBerry, iPhone, iPad, Windows Phone and tablets. Lead by Alan Knott-Craig Jnr, Mxit had 7.4 million monthly active subscribers in July 2013, of which 6.3 million were South Africans.