108 Names of Sri Krishna in Tamil in pdf is for free download. The prayer is known as Krishna Ashtottara. It is chanted regularly for attaining peace and prosperity. Reading the prayer is considered highly meritorious. The prayer can be chanted either in the morning or evening. It can be chanted by both male and female.
Link - Tamil Krishna Ashtottara Lyrics Prayer Text
The prayer can be chanted on all Thursdays in the morning during sunrise. The prayer is also chanted during Sri Krishna Janmashtami and whenever there is a worship of Bhagavan Sri Krishna.
The prayer is also chanted for health of children and for conceiving by couples.