VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Monday, October 13, 2025

View Firefly III View OpenCorporates Back to Home

Head-to-head

Firefly III vs OpenCorporates comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Firefly III adds Portfolio, APIs & SDKs, and Webhooks coverage that OpenCorporates skips.

OpenCorporates includes Data APIs, and Regulatory Filings Monitoring categories that Firefly III omits.

Firefly III highlights: Self-hosted open-source personal finance manager (AGPLv3 license)., Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting., and Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification..

OpenCorporates is known for: 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..

Firefly III

firefly-iii.org

An open-source, self-hosted personal finance manager licensed under AGPLv3. Offers full double-entry bookkeeping, REST APIs, and optional event webhooks. Exchange-rate conversion is available from v6.2 onward as an opt-in feature. Bank connections are handled separately through the Firefly Data Importer app.

Platforms

Web

API

Pricing

Free

Quick highlights

Self-hosted open-source personal finance manager (AGPLv3 license).
Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification.
Event webhooks for transaction create/update/delete, enabled through environment configuration.
Separate Data Importer tool supports CSV and CAMT.053, with optional bank integrations via Salt Edge, GoCardless, and SimpleFIN.

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OpenCorporates

opencorporates.com

The world’s largest open database of legal entities, offering both a public-facing search and an API. Free access is available for personal or public-benefit use, while commercial API access and bulk datasets require a paid plan. Bulk deliveries are provided via SFTP in CSV format, and the platform includes a public status page for web, API, knowledge base, and SFTP availability.

Platforms

Web

API

Pricing

Free

Subscription

Quick highlights

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).
OpenRefine Reconciliation API allows entity-matching from company names to legal identifiers.
Enterprise bulk access via SFTP, with six structured CSV datasets (Companies, Officers, Non-Registered Addresses, Alternative Names, Additional Identifiers, and Relationships).
Relationships dataset includes 30M+ links covering subsidiaries, branches, control statements, and shareholdings, with data from sources like the SEC and UK PSC.

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Overlap

Shared focus areas

1 overlap

Both tools cover this research theme.

Other

Where they differ

Firefly III

Distinct strengths include:

Portfolio

APIs & SDKs

Webhooks

Self-hosted open-source personal finance manager (AGPLv3 license).
Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification.
Event webhooks for transaction create/update/delete, enabled through environment configuration.

OpenCorporates

Distinct strengths include:

Data APIs

Regulatory Filings Monitoring

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).
OpenRefine Reconciliation API allows entity-matching from company names to legal identifiers.
Enterprise bulk access via SFTP, with six structured CSV datasets (Companies, Officers, Non-Registered Addresses, Alternative Names, Additional Identifiers, and Relationships).

Feature-by-feature breakdown

Attribute	Firefly III	OpenCorporates
Categories Which research workflows each platform targets	Shared: Other Unique: Portfolio, APIs & SDKs, Webhooks	Shared: Other Unique: Data APIs, Regulatory Filings Monitoring
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	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Self-hosted open-source personal finance manager (AGPLv3 license). Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting. Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification. Event webhooks for transaction create/update/delete, enabled through environment configuration. Separate Data Importer tool supports CSV and CAMT.053, with optional bank integrations via Salt Edge, GoCardless, and SimpleFIN. CSV export available for accounts, budgets, categories, tags, recurring transactions, subscriptions, piggy banks, rules, and more.	Unique 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). OpenRefine Reconciliation API allows entity-matching from company names to legal identifiers. Enterprise bulk access via SFTP, with six structured CSV datasets (Companies, Officers, Non-Registered Addresses, Alternative Names, Additional Identifiers, and Relationships). Relationships dataset includes 30M+ links covering subsidiaries, branches, control statements, and shareholdings, with data from sources like the SEC and UK PSC. Data acquisition ranges from hourly to quarterly; registry ingestion checks run every 5 minutes. Bulk deliveries are typically no more than one month behind official registries.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Not yet
Editor pick Featured inside curated shortlists	Standard listing	Standard listing

Frequently Asked Questions

Which workflows do Firefly III and OpenCorporates both support?

Both platforms cover Other workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Firefly III and OpenCorporates require subscriptions?

Both Firefly III and OpenCorporates keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Firefly III and OpenCorporates?

Both Firefly III and OpenCorporates 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?

Firefly III differentiates itself with Self-hosted open-source personal finance manager (AGPLv3 license)., Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting., and Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification., whereas OpenCorporates stands out for 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..

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