The Journal of Visualized Experiments is a scientific video journal. Issues 1 through 140 are available in PubMed Central (open access publications). After that joVE switched to a (very expensive) monetized publishing model.
Methods and Protocols is "an international, peer-reviewed, open access journal aiming to establish and describe new experimental techniques in the fields of Life Sciences, Chemistry, and Biomedical Sciences, published bimonthly online".