The Policy Project is an initiative of the New Zealand Government to support individual who provide advice to decision makers, access relevant tools, advice and information.  The site includes links to the project’s:

The Policy Methods Toolbox is a repository of policy development methods that helps policy practitioners identify and select the right approach for their policy initiative.

The Open Policy Making Toolkit is a product of the UK Government's Open Policy Lab. Access a range of tools and techniques to assist the policy development process.