Sites with a collection of concepts & tools
- Agile Retrospective Resource Wiki
- A great site for all kinds of retrospectives, eg. feedback loops
- Liberating Structures
- A site with many general tools for everyday life in organisations.
- Mind Tools
- The best site with different concepts explained in an excellent way, a must have.
- Facilitation Resources
- A collection of resources for your facilitation practice. By and large these resources support facilitation of participatory and self-organizing process at scales ranging from very small groups to large conferences.