Tool Comparison
Firefly III vs OpenCorporates
- Paid from
- —
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want portfolio and webhooks.
- Paid from
- On request
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want regulatory filings monitoring.
Pick Firefly III if
Firefly III
Free · Web · API
- You want portfolio and webhooks.
Pick OpenCorporates if
OpenCorporates
Free • Contact for pricing · Web · API
- You want regulatory filings monitoring.
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOther tools you might like
Outbound links may include affiliate or sponsor codes.
Not set on either one? See the top 50 tools, ranked by user votes, or the deals page for big discounts on popular tools.
Our take
The bottom line
Firefly III and OpenCorporates cover a lot of the same ground (2 shared categories, APIs & data feeds and other), so for the basics you won't go far wrong with either. Firefly III includes portfolio and webhooks, and OpenCorporates includes regulatory filings monitoring.
What readers say
Firefly III
No votes yet. Cast the first one.
OpenCorporates
No votes yet. Cast the first one.
What Firefly III does best
- Self-host a personal finance ledger under the AGPLv3 open-source license rather than using a hosted budgeting app.
- Track accounts and transactions with double-entry bookkeeping, budgets, categories, tags, recurring transactions, subscriptions, piggy banks, rules, and reports.
- Use the JSON REST API with OAuth2 or personal access tokens for dashboards, automations, and personal analytics.
- Optional event webhooks for transaction create, update, and delete events when enabled through environment configuration.
- Import transaction data through the separate Data Importer using CSV, CAMT.052, CAMT.053, GoCardless, SimpleFIN, Lunch Flow, or Enable Banking.
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 | Free • Contact for pricing |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | — | 9 limits: Essentials (API): api calls per month: 500, Essentials (API): api calls per day: 200 +7 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | No | No |
Integrations | GoCardless, SimpleFIN +5 more | OpenRefine |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 4 | 3 |
Regions | — | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | — | Latency: End of Day and Granularity: EOD |
Security | — | Status page |
| Try it | Visit Firefly III | Visit OpenCorporates |
Standout features
The best features of Firefly III and OpenCorporates.ShowHide
Standout features
What Firefly III does best
- Self-host a personal finance ledger under the AGPLv3 open-source license rather than using a hosted budgeting app.
- Track accounts and transactions with double-entry bookkeeping, budgets, categories, tags, recurring transactions, subscriptions, piggy banks, rules, and reports.
- Use the JSON REST API with OAuth2 or personal access tokens for dashboards, automations, and personal analytics.
- Optional event webhooks for transaction create, update, and delete events when enabled through environment configuration.
- Import transaction data through the separate Data Importer using CSV, CAMT.052, CAMT.053, GoCardless, SimpleFIN, Lunch Flow, or Enable Banking.
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 Firefly III 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: OAuth2 and APIKeyWebhooks | Auth: APIKey |
Import methods | CSVManual | Not specified |
Integrations | GoCardlessSimpleFINLunch FlowEnable BankingSlackDiscordMattermost | OpenRefine |
Export formats | CSV | CSVJSON |
| Plans & trust | ||
Security & compliance | Not specified | Status page |
Vendor & support | Firefly III (open-source project)Support: Email | OpenCorporates LtdCountry: United KingdomFounded 2010Support: Email |
Curation ratings | Methodology 4/5Reliability 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 | Free“Free (personal & public-benefit use)” |
| Entry paid plan | — | £225/mo“Essentials (API)”api calls per month: 500 · api calls per day: 200 · +1 more |
| Tier 2 | — | £660/mo“Starter (API)”api calls per month: 2,500 · api calls per day: 500 · +1 more |
| Top plan | — | £1200/mo“Basic (API)”api calls per month: 5,000 · api calls per day: 1,000 · +1 more |
| Custom / enterprise | — | Contact sales“Enterprise Bulk (SFTP CSV datasets)” |
Questions we keep getting
What's the difference between Firefly III and OpenCorporates?
Firefly III leans toward portfolio, APIs & data feeds, and webhooks, while OpenCorporates puts more weight on APIs & data feeds, regulatory filings monitoring, and other. They overlap in 2 categories, so for most people it comes down to workflow preference and price.
How much do Firefly III and OpenCorporates cost?
Good news: both Firefly III and OpenCorporates have free plans, so you can run them side by side and only pay if you hit a wall.
Do Firefly III 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 Firefly III or OpenCorporates?
It depends on what you're after. Pick Firefly III if portfolio and webhooks matter to you; go with OpenCorporates if you'd rather have regulatory filings monitoring. And if you only need the basics both share, let price decide.
Can I export data from Firefly III and OpenCorporates?
Yes, both export to spreadsheets (CSV), which is handy if you like running your own numbers.
Can I track my portfolio with Firefly III or OpenCorporates?
Firefly III handles portfolio tracking. OpenCorporates is really a research tool; you'd track your portfolio elsewhere.
Keep researching
Other tools you might like
Keep Exploring
Feedback
Spot stale pricing, missing features, or a comparison that feels off? Send feedback on the verdict, table, alternatives, or recommendation.
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.