VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Sunday, May 31, 2026
Tool Comparison · Sunday, May 31, 2026
Firefly III vs OpenCorporates
Firefly III vs OpenCorporates: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
Firefly III
firefly-iii.org
Best for portfolio, and apis & sdks
- Pricing
- Free
- Platforms
- Web, API
OpenCorporates
opencorporates.com
Best for data apis, and regulatory filings monitoring
- Pricing
- Free
- Platforms
- Web, API
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
Firefly III if…
- You need self-hosted open-source personal finance manager (agplv3 license).
- You need supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
- You need comprehensive rest api (json) with oauth2 and personal access tokens, plus a full openapi specification.
- You need api documentation now notes ongoing versioned diffs from v6.4.0 onward and primary-currency conversion fields when exchange-rate conversion is enabled.
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).
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | Firefly III | OpenCorporates |
|---|---|---|
Asset types | Other | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Data freshness | Not specified | End of Day |
API access | REST | REST |
Export formats | CSV | CSVJSON |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
Firefly III
—
Starting price
Plans & pricing
Tool
OpenCorporates
—
Starting price
Plans & pricing
Coverage overlap
Categories covered by OpenCorporates 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 Firefly III and OpenCorporates?
Firefly III focuses on Portfolio, APIs & SDKs, and Webhooks while OpenCorporates specializes in Data APIs, Regulatory Filings Monitoring, and Other. They overlap in 1 categories, so choose based on your preferred workflow and pricing.
How much do Firefly III and OpenCorporates cost?
Good news—both Firefly III and OpenCorporates offer free plans. You can try each platform without commitment and only pay when you need premium features.
Do Firefly III and OpenCorporates 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 Firefly III or OpenCorporates?
Choose Firefly III if you need Self-hosted open-source personal finance manager (AGPLv3 license)., and Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.. Go with OpenCorporates if 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). better fits how you invest.
Can I export data from Firefly III and OpenCorporates?
Both platforms let you export data to spreadsheets (CSV). This is useful for custom analysis or record-keeping.
Can I track my portfolio with Firefly III or OpenCorporates?
Firefly III offers portfolio tracking features. OpenCorporates is more focused on research and analysis.
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.