VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
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Friday, May 29, 2026
Tool Comparison · Friday, May 29, 2026
OpenCorporates vs Similarweb
OpenCorporates vs Similarweb: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
OpenCorporates
opencorporates.com
Best for regulatory filings monitoring, and other
- Pricing
- Free
- Platforms
- Web, API
Similarweb
similarweb.com
Best for app & website traffic, and apis & sdks
- Pricing
- Free • Paid plans available
- Platforms
- Web, API
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
OpenCorporates if…
- You need public api portal advertises 200m+ company records, aggregated from official registries with provenance and source links.
- You need versioned rest api with json (default) or xml output; api keys required. free tier provides up to 200 requests per month (50 per day).
- You need openrefine reconciliation api allows entity-matching from company names to legal identifiers.
- You need enterprise bulk access via sftp, with six structured csv datasets (companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships).
Choose
Similarweb if…
- You need website traffic and engagement analytics, including keyword research, referral sources, and a free traffic checker tool.
- You need api v5 beta available in rest and batch modes: rest delivers on-demand json responses, while batch handles large reports for data warehouses and historical research.
- You need webhook support for subscribing to daily or monthly data releases, with options to manage subscriptions directly.
- You need data exporter for no-code bulk exports, including scheduled email delivery and csv downloads.
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | OpenCorporates | Similarweb |
|---|---|---|
Asset types | Other | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Data freshness | End of Day | End of Day |
API access | REST | REST |
Export formats | CSVJSON | CSVExcelJSONPDFImage |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
OpenCorporates
—
Starting price
Plans & pricing
Tool
Similarweb
$199/mo
Starting price
Plans & pricing
Coverage overlap
Categories covered by OpenCorporates only.
Categories covered by Similarweb only.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between OpenCorporates and Similarweb?
OpenCorporates focuses on Data APIs, Regulatory Filings Monitoring, and Other while Similarweb specializes in App & Website Traffic, Data APIs, and APIs & SDKs. They overlap in 1 categories, so choose based on your preferred workflow and pricing.
How much do OpenCorporates and Similarweb cost?
Good news—both OpenCorporates and Similarweb offer free plans. You can try each platform without commitment and only pay when you need premium features.
Do OpenCorporates and Similarweb have APIs?
Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.
Should I choose OpenCorporates or Similarweb?
Choose OpenCorporates if you need Public API portal advertises 200M+ company records, aggregated from official registries with provenance and source links., and Versioned REST API with JSON (default) or XML output; API keys required. Free tier provides up to 200 requests per month (50 per day).. Go with Similarweb if Website traffic and engagement analytics, including keyword research, referral sources, and a free traffic checker tool., and API V5 beta available in REST and Batch modes: REST delivers on-demand JSON responses, while Batch handles large reports for data warehouses and historical research. better fits how you invest.
Can I export data from OpenCorporates and Similarweb?
Both platforms let you export data to spreadsheets (CSV, and JSON). This is useful for custom analysis or record-keeping.
Other tools you might like
These profiles share overlapping coverage with both sides of this matchup.
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.