The Arizona State University’s Center for Problem-Oriented Policing says that its mission is “to advance the concept and practice of problem-oriented policing in open and democratic societies. It does so by making readily accessible information about ways in which police can more effectively address specific crime and disorder problems.” The site includes downloadable guides for police on specific topics such as particular crimes (e.g. “Drive-By Shooting,” “Elderly Abuse,” “Shoplifting”) as well as topics on policing more generally (e.g. “Identifying and Defining Policing Problems”). The site also includes a Crime Prevention Evaluation Database and documents relating to research projects about approaches to crime reduction which it has performed in various municipalities.
The Council of State Governments (CSG) Justice Center is a nonprofit that “provides practical, nonpartisan advice and consensus-driven strategies—informed by available evidence—to increase public safety and strengthen communities” by working with federal, state, and local governments and agencies. The NRRC is a project of the CSG which aims specifically to assist government officials and policymakers with the evaluation of issues regarding reentry in their communities by sharing information, performing research on trends in reentry, and by funding related projects.
This custom Google search yields results from the web pages of more than 590 “institutions affiliated with universities, governments, advocacy groups, foundations, non-governmental organizations, and businesses that generate public policy research, analysis, and activity.” As an example, you might try a search for “criminal justice reform” to see the kinds of results this tool can return.
The NCSC is an independent non-profit organization which aims to “support improvement in judicial administration in state courts.” Its work includes the Court Statistics Project Dataviewer, which provides caseload data for courts across the country.
A nonprofit organization founded in 1976, PERF “is a police research and policy organization and a provider of management services, technical assistance, and executive-level education to support law enforcement agencies. PERF helps to improve the delivery of police services through the exercise of strong national leadership; public debate of police and criminal justice issues; and research and policy development.”
The NASC is a nonprofit “created to facilitate the exchange and sharing of information, ideas, data, expertise, and experiences and to educate on issues related to sentencing policies, guidelines and commissions.” This page has links to the sites of many state sentencing commissions/councils (including the Pennsylvania Commission on Sentencing).