GSDRC is "Governance and social development resource centre" which was established by the UK Department for International Development (DFID) in 2005. Their primary function is to strengthen DFID's capacity to achieve its poverty reduction goals by better informing policymaking and enhancing professional knowledge and competencies. It high quality, timely information to support international development project and programme planning, policy-making, and other activities in the field. (See their guide books on: http://www.gsdrc.org/go/topic-guides

It has interesting books, papers and other guides in:
Aid instruments & aid effectiveness; Civil service reform; Conflict; Drivers of change; Fragile states; HIV and AIDS; Human rights; Institutional development; Justice; Measuring governance; Monitoring and evaluation; Political systems; Pro-poor growth; Public financial management and accountability; Security and development; Service delivery; Social exclusion; Social protection; Voice and accountability