| API | Description | Category | Date |
|---|---|---|---|
| 5min | Instructional video database | Video | 2009-04-16 |
| arXiv | Academic research repository | Reference | 2008-05-04 |
| CatalogWS | Academic library | Reference | 2008-02-07 |
| Cerego iKnow | Social cognitive learning service | Other | 2008-10-30 |
| Dipity | Interactive timeline creation services | Photos | 2008-08-02 |
| DonorsChoose | Classroom needs service | Other | 2009-04-03 |
| Google Research Search | Search services for researchers | Search | 2007-08-20 |
| Howcast | How-to video search service | Video | 2008-09-03 |
| KISTI | Topic-centric search service | Search | 2008-07-13 |
| LexisNexis Academic | Academic research repository | Reference | 2008-12-29 |
| OpenDOAR | Academic research repository | Reference | 2007-05-21 |
| Scopus | Academic citation database | Reference | 2008-03-25 |
| Sherpa Romeo | Journal publishing service | Reference | 2009-04-27 |
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