RunMyCode, for creating companion sites associated with research papers that allow people to implement the methodology
Dataverse, repository for research data that takes care of long term preservation and good archival practices, while researchers can share, keep control of and get recognition for their data
GitHub, hosting service for version control using git
openICPSR, share your behavioral health and social science research data on this website of the Inter-university Consortium for Political and Social Research
ResearchCompendia, allowed people to share the research software and data associated with a scientific publication but seems to be out of order. The code of the project can still be accessed at GitHub.
DIME Wiki to increase quality of development research, by the impact evaluation unit of the World Bank Research Group