★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: Ahrefs checked August 4, 2026
Tool Comparison
Ahrefs vs OpenCorporates
Pick Ahrefs if
Ahrefs
Free • From $29/mo · Web · Desktop · API
- Delayed quotes won't cut it; you need real-time data
- You care about app & website traffic, something OpenCorporates doesn't offer
Pick OpenCorporates if
OpenCorporates
Free • Contact for pricing · Web · API
- You care about regulatory filings monitoring and other, things Ahrefs doesn't offer
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
The real difference is focus: only Ahrefs gives you app & website traffic, and only OpenCorporates gives you regulatory filings monitoring and other. On paper they're closely matched, so let pricing, platform fit, and the details below break the tie.
What readers say
Ahrefs
Vote once to reveal the community verdict.
OpenCorporates
Vote once to reveal the community verdict.
Key differences at a glance
- Real-time data
- Ahrefs
- Desktop app
- Ahrefs
- Free plan
- Both
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $29/mo | Free • Contact for pricing |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | 59 limits: Webmaster Tools (AWT): verified websites: Unlimited, Webmaster Tools (AWT): web analytics events per project per month: 1,000,000 +57 more | 8 limits: Essentials (API): api calls per month: 500, Essentials (API): api calls per day: 200 +6 more |
| Platforms & access | ||
Web app | Yes | Yes |
Desktop app | Yes | No |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | — | No |
Integrations | Google Search Console, Google Looker Studio +1 more | OpenRefine |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 2 | 3 |
Regions | — | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | Latency: Real-time | Latency: End of Day and Granularity: EOD |
Security | — | Status page |
| Try it | Visit Ahrefs | Visit OpenCorporates |
Where each one shines
What Ahrefs and OpenCorporates each do best.ShowHide
Where each one shines
What Ahrefs and OpenCorporates each do best.What Ahrefs does best
- Site Explorer and website traffic estimates to study organic traffic, paid traffic, top pages, search visibility, and backlink authority for public companies or competitors.
- Website Traffic Checker and bulk checks to compare web demand signals across many domains before deeper investment research.
- Keywords Explorer, Content Explorer, Rank Tracker, and Site Audit to understand search demand, content performance, technical SEO, and visibility changes.
- Free Ahrefs Webmaster Tools for verified websites, including limited Site Explorer, Site Audit, and Web Analytics access.
- Web Analytics for privacy-friendly first-party website analytics where you own or verify the site.
What OpenCorporates does best
- Search tools across a public legal-entity database advertised at 200M+ company records aggregated from official registries with provenance and source links.
- The versioned REST API with API-key authentication and JSON or XML output for company and officer data workflows.
- OpenRefine Reconciliation API to match company names to legal identifiers during entity-resolution work.
- Access to enterprise bulk data through SFTP-delivered CSV datasets for companies, officers, addresses, alternative names, identifiers, and relationships.
- Relationship data for subsidiaries, branches, control statements, shareholdings, and ownership-mapping workflows.
Every detail we compared
Every tracked attribute for Ahrefs and OpenCorporates, side by side.ShowHide
Every detail we compared
Every tracked attribute for Ahrefs and OpenCorporates, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | Other | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
| Data | ||
Data freshness | Real-time | End of Day |
Data granularity | Not specified | EOD |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKey60 req/minDocs | Auth: APIKey |
Integrations | Google Search ConsoleGoogle Looker StudioGoogle Sheets | OpenRefine |
Export formats | CSVPDF | CSVJSON |
| Plans & trust | ||
Security & compliance | Not specified | Status page |
Vendor & support | Ahrefs Pte. Ltd.Country: SingaporeSupport: Email and Chat | OpenCorporates LtdCountry: United KingdomFounded 2010Support: Email |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Free“Webmaster Tools (AWT)”verified websites: Unlimited · web analytics events per project per month: 1,000,000 · +4 more | Free“Free (personal & public-benefit use)” |
| Entry paid plan | $29/mo“Starter”credits per month: 200 · unverified projects: 1 · +5 more | £225/mo“Essentials (API)”api calls per month: 500 · api calls per day: 200 |
| Tier 2 | $129/mo“Lite”projects: 5 · historical data: 6 months · +10 more | £660/mo“Starter (API)”api calls per month: 2,500 · api calls per day: 500 · +1 more |
| Tier 3 | $249/mo“Standard”projects: 20 · historical data: 2 years · +10 more | £1200/mo“Basic (API)”api calls per month: 5,000 · api calls per day: 1,000 · +1 more |
| Tier 4 | $449/mo“Advanced”projects: 50 · historical data: 5 years · +10 more | — |
| Top plan | $1499/mo“Enterprise”included users: From 3 · additional users max: Unlimited · +8 more | — |
| Custom / enterprise | — | Contact sales“Enterprise Bulk (SFTP CSV datasets)” |
Questions we keep getting
What's the difference between Ahrefs and OpenCorporates?
Ahrefs leans toward app & website traffic and APIs & data feeds, while OpenCorporates puts more weight on APIs & data feeds, regulatory filings monitoring, and other. They overlap in 1 categories, so for most people it comes down to workflow preference and price.
How much do Ahrefs and OpenCorporates cost?
Good news: both Ahrefs and OpenCorporates have free plans, so you can run them side by side and only pay if you hit a wall.
Do Ahrefs and OpenCorporates have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose Ahrefs or OpenCorporates?
It depends on what you're after. Pick Ahrefs if app & website traffic matter to you; go with OpenCorporates if you'd rather have regulatory filings monitoring and other. And if you only need the basics both share, let price decide.
Does Ahrefs or OpenCorporates have real-time data?
Ahrefs offers real-time data, which matters if you trade actively. OpenCorporates runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from Ahrefs and OpenCorporates?
Yes, both export to spreadsheets (CSV), which is handy if you like running your own numbers.
Keep researching
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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.