• American Society for Micribiology (with Embargo)
• Bentham Open Access
• Bio-Med Central
• ChemSpider
• Cochrane Library
• Copernicus Publications
• Current Science 
• DOAJ
• Free Medical Journals
• De Gruyter Reference Global
• High Wire Press Archives 
• Hindawi Corporation
• Indian Academy of Sciences (IAS)
• InTech Open Access
• J-Stage
• MathWorld
• MedIND
• PLoS
• Pub Med Central
• SabiNet
• Scholarly Exchange List
• Scientific Research Pub
• Friends Science Publishers

Free/Open Source Reference Managers and grammar check tool

• Zotero
• Mendeley
• Overleaf
• Quillbot

Open Educational Resources

• Oercommons
• MIT-OCW