SyntheticPages
SyntheticPages is a "freely available interactive database of synthetic chemistry."
SyntheticPages is not a journal, and not a wiki - it is intended to be something in between. Users can submit procedures, but they are checked by an editor without undergoing any formal peer-review. The intention is to collect practical experience of conducting procedures in the lab, which other users can comment on - hence the site's slogan "peer review in the public domain".
History
The site was originally started as an academic collaboration, and hosted at The University of Warwick. It is now an LLP supported by commercial sponsorship.