a. Joomla! 3.3.x extension, which lets you present mathematical equations and relationships in convenient way according to TEX syntax,
b. Joomla! extension plugin, type: content,
c. conversion of bot_mimetex extension (valid for J! 1.0.x and 1.5.x), which was originally written by Pham Minh Tri to requirements of J! 2.5.x.