Lens  | 
                    Espacenet  | 
                    |
Indian Patent Search  | 
                    US Patent and Trademark Office  | 
                    
Dimensions  | 
                    PubMed  | 
                    Crossref  | 
                  
Google Scholar  | 
                    
Retraction Watch Database  | 
                  
Emerald Insight  | 
                    LOADB ( List of OA Database)  | 
                    Open Index Initiative  | 
                  
Science Direct  | 
                    
Learn Engg (Infoplus Technologies)-Polytechnic and Engineering Subject  | 
                  EBox (Amphisoft Technologies)-Employability Skills  | 
                  Talent Rank (Amphisoft Technologies)-Assessment and certification  | 
                
English Bolo (English Helper)-English Language  | 
                  Career Path Navigator (PerfecticeEduventurePvt Ltd)-Training Recommendation and Intervention  | 
                  Job Readiness (PerfecticeEduventurePvt Ltd)- Company Specific Mock and Preparation  | 
                
Codetantra- Learn Coding Onlinea) Hadoop: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_1 b) Python: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_2 c) Java: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_3 d) C: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_4 e) Data Structure: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_5 f) C++: https://neat.aicte-india.org/course-details/NEAT2019183_PROD_6 g) Selenium 2.0:https://neat.aicte-india.org/course-details/NEAT2019183_PROD_7  | 
              
re3data.org – Registry of Research Data Repositories  | 
                  Open Access Directory (OAD)  | 
                  CORE -The world’s largest collection of open access research papers  | 
                
Open DOAR  | 
                  Dryad  | 
                  The Registry of Open Access Repository Mandates and Policies (ROARMAP)  | 
                
eScholarship ( University of California)  | 
                  Open Knowledge Repository (World Bank)  | 
                  Figshare  | 
                
Registry of Open Access Repositories  | 
                  
bioRxiv – The Preprint Server for Biology  | 
                  TechRxiv -Preprints in Technology Research  | 
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medRxiv –The Preprint Server for Health Sciences  | 
                  chemRxiv –The Preprint Server for Chemistry  | 
                  
Research Square  | 
                  CogPrints  | 
                  OSF PrePrints  | 
                
Authorea  | 
                  PrePrints  |