VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Tuesday, January 6, 2026
Tool Comparison
OpenCorporates vs Similarweb comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
OpenCorporates
opencorporates.com
Similarweb
similarweb.com
Comparison highlights
- Tool score: the chart below shows community vote sentiment over the last 8 weeks. Use it as a signal, not a verdict.
- Overlap: both cover Data APIs.
- Coverage tilt: OpenCorporates has 2 categories you won't get in Similarweb; Similarweb has 4 unique categories.
- Curation signals: Similarweb: Hands-on review.
Category leaders
- Data Visualizations: Similarweb is tagged for this workflow; OpenCorporates has no category votes yet.
Vote sentiment comparison
Cumulative positive vote share. Loading fresh totals...
Side-by-side metrics
| Attribute | OpenCorporates | Similarweb |
|---|---|---|
Asset types Supported asset classes and universes | Other | Other |
Experience levels Who each product is built for | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Platforms Where you can access the product | Web, API | Web, API |
Pricing High-level pricing models | Free, Subscription | Free, Subscription |
Tested Verified by hands-on testing inside Find My Moat | Not yet | Yes |
Editor pick Featured inside curated shortlists | Standard listing | Standard listing |
Coverage overlap
OpenCorporates strengths
Categories covered by OpenCorporates but not Similarweb.
Similarweb strengths
Categories covered by Similarweb but not OpenCorporates.
Frequently Asked Questions
Which workflows do OpenCorporates and Similarweb both support?
Both platforms cover Data APIs workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do OpenCorporates and Similarweb require subscriptions?
Both OpenCorporates and Similarweb keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access OpenCorporates and Similarweb?
Both OpenCorporates and Similarweb prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.
What unique strengths set the two platforms apart?
OpenCorporates differentiates itself with 230M+ company records spanning 145+ jurisdictions, aggregated from 140+ official registries with full provenance and source links., Versioned REST API with JSON (default) or XML output; API keys required. Free tier provides up to 200 requests per month (50 per day)., and OpenRefine Reconciliation API allows entity-matching from company names to legal identifiers., whereas Similarweb stands out for Website traffic and engagement analytics, including keyword research, referral sources, and a free traffic checker tool., APIs available in REST and Batch modes: REST delivers JSON responses, while Batch handles large CSV reports., and Webhook support for subscribing to daily or monthly data releases, with options to manage subscriptions directly..
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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.