1. AccessEngineering
2. ACM Full-Text Collection
3. ACS Publications
4. Aerospace Research Central
5. arXiv
6. ASM Alloy Center Database
7. ASM Failure Analysis Database
8. ASM Handbooks Online
9. ASTM Compass
10. BazTech
11. ChemSpider
12. dblp computer science bibliography
13. DieselNet Technology Guide
14. EDGE Research Reports
15. Gale OneFile: Computer Science
16. IEEE Xplore Digital Library
17. Knovel
18. NUMDAM
19. OnArchitecture
20. OnePetro
21. Oxford Art Online
22. Pidgeon Digital
23. RÖMPP Online
24. SAE Mobilus
25. SciTech Connect
26. SCOAP3
27. Skillsoft Books
28. SpringerMaterials
29. Techniques de L'ingenieur
30. The O’Reilly Learning Platform
31. TRAIL (UNT Digital Library)
32. USPTO Patent Applications
33. USPTO Patent Grants