Tool Comparison
Diffchecker vs OpenCorporates
- Paid from
- $15/mo
- Free plan
- Yes
- Platforms
- Web, Desktop, API
Best if
- You want diff view.
- Paid from
- On request
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want regulatory filings monitoring and other.
Pick Diffchecker if
Diffchecker
Free • From $15/mo · Web · Desktop · API
- You want diff view.
Pick OpenCorporates if
OpenCorporates
Free • Contact for pricing · Web · API
- You want regulatory filings monitoring and other.
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
Diffchecker includes diff view, and OpenCorporates includes 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
Diffchecker
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OpenCorporates
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Key differences at a glance
- Free trial
- Diffchecker14 days
- Desktop app
- Diffchecker
- Free plan
- Both
What Diffchecker does best
- Comparison tools for text, Word documents, PDFs, Excel files, images, and folders from a web interface.
- Diffchecker can be used to review changed filing language, revised research notes, spreadsheet edits, model outputs, term sheets, or diligence documents.
- Tools for running desktop comparisons when confidential files should stay offline instead of being uploaded to the web app.
- Redline views, diff merging, real-time text comparison, dark mode, and PDF export on the plans that include them.
- AI difference summaries with limited free web uses and unlimited access on paid web plans.
What OpenCorporates does best
- Search more than 200 million company records collected from official sources, with provenance and source links.
- Use a versioned REST API with API-key authentication and JSON or XML output for company and officer data.
- Match company names to legal identifiers with the OpenRefine Reconciliation API.
- Receive bulk CSV datasets through SFTP for companies, officers, addresses, alternative names, identifiers, and relationships.
- Map subsidiaries, branches, control statements, and shareholdings with the relationships dataset.
Side by side
Pricing comparison
See for yourself
Side by side
Price, platforms, data, and market coverage.ShowHide
Side by side
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $15/mo | Free • Contact for pricing |
Free tier | Yes | Yes |
Free trial | 14 days | — |
Plan limits | 6 limits: API Free: requests per month: 50, API Free: max request size: 5 MB +4 more | 9 limits: Essentials (API): api calls per month: 500, Essentials (API): api calls per day: 200 +7 more |
| Platforms & access | ||
Web app | Yes | Yes |
Desktop app | Yes | No |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | — | No |
Integrations | iManage | 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: End of Day and Granularity: EOD |
Security | SSO: SAML | Status page |
| Try it | Visit Diffchecker | Visit OpenCorporates |
Standout features
The best features of Diffchecker and OpenCorporates.ShowHide
Standout features
What Diffchecker does best
- Comparison tools for text, Word documents, PDFs, Excel files, images, and folders from a web interface.
- Diffchecker can be used to review changed filing language, revised research notes, spreadsheet edits, model outputs, term sheets, or diligence documents.
- Tools for running desktop comparisons when confidential files should stay offline instead of being uploaded to the web app.
- Redline views, diff merging, real-time text comparison, dark mode, and PDF export on the plans that include them.
- AI difference summaries with limited free web uses and unlimited access on paid web plans.
What OpenCorporates does best
- Search more than 200 million company records collected from official sources, with provenance and source links.
- Use a versioned REST API with API-key authentication and JSON or XML output for company and officer data.
- Match company names to legal identifiers with the OpenRefine Reconciliation API.
- Receive bulk CSV datasets through SFTP for companies, officers, addresses, alternative names, identifiers, and relationships.
- Map subsidiaries, branches, control statements, and shareholdings with the relationships dataset.
All details
Every attribute we track for Diffchecker and OpenCorporates.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | Other | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
| Data | ||
Data freshness | Not specified | End of Day |
Data granularity | Not specified | EOD |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKey | Auth: APIKey |
Integrations | iManage | OpenRefine |
Export formats | PDF | CSVJSON |
| Plans & trust | ||
Security & compliance | SSO: SAML | Status page |
Vendor & support | Checker Software Inc.Country: CanadaSupport: Email | OpenCorporates LtdCountry: United KingdomFounded 2010Support: Email |
Curation ratings | Methodology 3/5Reliability 4/5UX 4/5 | Not specified |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Free“Basic” | Free“Free (personal & public-benefit use)” |
| Entry paid plan | $15/mo“Pro + Desktop” | £225/mo“Essentials (API)”api calls per month: 500 · api calls per day: 200 · +1 more |
| Tier 2 | $20/mo“Legal” | £660/mo“Starter (API)”api calls per month: 2,500 · api calls per day: 500 · +1 more |
| Tier 3 | $40/yr≈ $40/mo“Enterprise” | £1200/mo“Basic (API)”api calls per month: 5,000 · api calls per day: 1,000 · +1 more |
| Tier 4 | $99/mo“API Standard”credits per month: 10,000 · max request size: 100 MB | — |
| Top plan | $299/mo“API Business”credits per month: 100,000 · max request size: 100 MB | — |
| Custom / enterprise | Contact sales“API Enterprise” | Contact sales“Enterprise Bulk (SFTP CSV datasets)” |
| Free trial | 14 days | — |
Questions we keep getting
What's the difference between Diffchecker and OpenCorporates?
Diffchecker leans toward diff view 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 Diffchecker and OpenCorporates cost?
Good news: both Diffchecker and OpenCorporates have free plans, so you can run them side by side and only pay if you hit a wall.
Do Diffchecker 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 Diffchecker or OpenCorporates?
It depends on what you're after. Pick Diffchecker if diff view 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.
Can I export data from Diffchecker and OpenCorporates?
OpenCorporates exports to CSV. Diffchecker is stingier about getting data out.
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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.