Materials are needed to replace the estimated 50,000 metric tons of tin-lead solder currently used each year, because of toxicity concerns, but there are no drop-in replacements for eutectic tin-lead solder. Electrically Conductive Adhesives (ECAs), which are also known as conductive epoxies, are becoming increasingly common to replace solders in a variety of functions, applications and industries. This report covers the three main categories of conductive adhesives available as safe and environmentally-sound solder alternatives.