Agent technology has become one of the dynamic and most interesting areas of computer science in recent years. The dynamism of this technology has resulted in computer generated characters, known as pedagogical agent, entering the digital learning environments in increasing numbers. Commonly deployed in implementing tutoring strategies, these characters, through the manifestation of verbal and non-verbal communication behaviors, are able to engage students in meaningful learning experience. Their social affordances and motivational benefits are seen as essential components in e-learning environment that lacks the presence of a social entity, leading to animated characters becoming a milestone in interactive e-learning environment. This paper reviews some of the agent technology software commonly used by developers for creating animated characters in pedagogical role. The review includes a brief explanation on features as well as operational procedures of selected agent software such as MS Agent, Vox Proxy, Noah, Code Baby, Sitepal and Crazy Talk. The conclusion looks into the strength and shortcomings in each software from the perspective of visual and verbal affordances as well as their instructional merits.