Organocatalysts are small organic molecules that accelerate chemical reactions without being consumed in the process. They offer a more environmentally friendly alternative to traditional metal catalysts, as they are often less toxic and can be derived from renewable resources. Organocatalysis is widely used in organic synthesis, enabling the production of pharmaceuticals and fine chemicals. These catalysts work by stabilizing transition states or intermediates in a reaction, thereby lowering the activation energy required. Examples of organocatalysts include proline and amines, which can facilitate various reactions such as Michael additions and aldol reactions. Their versatility makes them valuable tools in modern chemistry.