In Nepal and around the world, iDE has taken a leading role in the micro irrigation revolution. Over the last 20 years, iDE has developed low-cost, appropriate technologies for smallholders including drip systems, micro sprinklers, treadle (foot) pumps, and water storage and distribution technologies. iDE invests in design and initial promotion of these technologies, which private companies cannot afford to develop because they are unable to establish enforceable patent rights. Once popularized, these products are sustainably manufactured and marketed by the local private sector. iDE has taken a leading role in innovating low-cost piped water irrigation systems, including multiple-use systems (MUS) that provide water for irrigation and domestic use. The iDE MUS program is globally recognized by IWMI (International Water Management Institute). iDE has also developed appropriate agricultural equipment for essential oil distillation and coffee processing and has developed IPM packages that use safe bio products to reduce chemical use on major horticultural crops.