Free access to scientific publications

Open archives Journals :

• Directory of Open Access Journals

• Free Medical Journals

• HighWire

Search tools for Open archives

• OAISter
• ARC - A Cross Archive Search Service

Thematic platforms :

• ArXiv - Physics, Mathematics, Computer Science and Quantitative Biology
• PhysNet - Physics
  

Commercial tools :

• SCIRUS - For Scientific Information Only
  

• Google Scholar
• CROSSREF
  

Inventory and localisation of archive deposits :

• EPrints - Archives and feeding statistics recording
• ROARMAP - Registry of Open Access Repository Material Archiving Policies - Policies on OA displayed by country / continent
• Open DOAR - The Directory of Open Access Repositories

Open access and publication impact measurement :

• CiteSeer
• OpCite - Open Citation project