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Every number, back to its origin.
StatOrigin is a free database of industry statistics. Every number traces back to its primary source: the publisher, the report, the page and the sentence it came from, so you can check it before you cite it.
Tag
Open data tools
Indie products their makers tagged "open data", most upvoted first.
One product on IndieNeed has this tag. Tags are chosen by each maker.
Ranked products
Browse the best tools by category or every product.