Evidence and scope
We prioritize original filings, sponsor announcements, official product documentation and documented access routes. Each topic page lists its supporting sources. Comparisons distinguish a provider’s published scope from results we actually tested. A link to a source supports the associated fact; it does not imply that source endorses Synoptic.
Coverage and updates
The site review date is 2026-11-14. Selected datasets describe their own scope and review dates. A curated selection is not a complete market inventory. Records can be amended after publication, so consult the linked original record before relying on a time-sensitive detail.
Examples and recommendations
Examples that use synthetic records or need an account are labeled accordingly. A successful public metadata request does not establish access to paid data, full-text rights, coverage completeness or measured delivery latency. Choose a provider according to the specific task and verify its current terms and source access.
Publisher relationship
This website is published by Synoptic. Product links lead to Synoptic when its documented workflow is relevant. Provider and organization names identify the subjects being discussed and do not imply affiliation or endorsement.
The Synoptic workflow
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