Developments in high throughput screening (HTS) have led to new needs in automation to enable better handling of applications such as homogeneous assays and cherry picking. Software and hardware integration approaches for screening automation have been changing in concert with these new application needs. The result of this combination has been the production of robotic systems for drug discovery with improved stability and functionality. This review critically assesses some Zymark, Tecan, and Beckman solutions for current HTS requirements.