Synopsis Neem tree Azardirachta indica A. Juss, being native to India, its utilization had been extensively practised for traditional and Ayurvedic medicines since several decades. Neem by-products are also of great help in agriculture worldwide. Isolation and identification of neem constituents was rapid during recent years. Application of synthetic pesticides resulted in serious side-effects. This aspects is of potential significance for the future pest management which has begun to arouse worldwide concern. In practical terms, the choice of any insecticide, including the botanicals, is a crucial decision. Information pertaining to neem pesticides is available in a number of articles dealing with various aspects. Therefore, consolidation of information is done in a comprehensive and easy manner and a major bibliography is updated.