In an attempt to consolidate the work of the WHO Department of Service Delivery and Safety (SDS) on quality improvement, a SDS cross-cut team has produced a compendium of tools and resources on quality improvement, developed within the SDS, that are applicable for country support. It includes resources on IPCHS and community engagement among others. It also includes practical examples of how the tools and resources have been applied in-country, including relevant links with other areas, such as measurement.  Ministries of health, facility quality improvement teams, researchers, development agencies and any organization or individual working to improve the quality of health service delivery can benefit from this compendium.