Open Data · head-to-head
Archive.org vs Callook.info
The Internet Archive's Advanced Search and Metadata APIs let you query and pull structured records for its 99+ million digitized books, web captures, audio, video, and software items. Reads are keyless for both the search endpoint (archive.org/advancedsearch.php) and per-item metadata (archive.org/metadata/{identifier}), returning JSON, XML, or CSV depending on the requested output format.
Callook.info is a free, keyless lookup service for FCC-licensed US amateur radio callsigns, returning license status, operator class, name, and registered address as either JSON or XML. A live request for a real callsign returns a wildcard Access-Control-Allow-Origin header with no authentication required, confirming it's safe to call directly from browser code.
| Archive.org | Callook.info | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, XML, CSV | JSON, XML |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
Archive.org supports 3 response formats, while Callook.info offers fewer — pick Archive.org for more integration flexibility.