VOL. XCIV, NO. 247

Free Alternatives to OpenCorporates

Checking

Free replacement verdicts

Free Alternatives to OpenCorporates

Zero-cost replacements grouped by fit, tradeoffs, pricing friction, and platform access. Use this list to test OpenCorporates before paying for another subscription.

Switching from OpenCorporates doesn't have to cost a thing. We've curated 20 free-tier alternatives that cover similar workflows, from APIs & Data Feeds to Regulatory Filings Monitoring and beyond. Each pick below is framed by fit, caveats, and access friction so you can trial replacements without opening your wallet.

Visit OpenCorporates All alternatives Tool details

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Which Alternative Should You Use?

Visualping

Closest replacement

Best for: Investors and compliance teams that need alerts when regulator, IR, pricing, terms, competitor, or news pages change.

Visualping best matches the base workflow on financial data API, market monitoring, and AI agent data access.
Visualping keeps the replacement test in the same free-access lane. Free access caveat: signup required and Free plan is available for limited website monitoring..

Watch for: Not market data: Visualping monitors website changes. Users still need to verify page content and normalize data for investment analysis.

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SEC.gov (EDGAR)

Best workflow fit

Best for: Anyone needing the official free source for U.S. public-company filings, fund filings, insider forms, 13F reports, XBRL company facts, and bulk EDGAR archives.

SEC.gov (EDGAR) best matches the base workflow on financial data API, fundamental research, and research reports.
SEC.gov (EDGAR) keeps the replacement test in the same free-access lane. Free access caveat: SEC EDGAR APIs are free and require no API key for public investor/research endpoints..

Watch for: Fair-access limits: Automated users must declare a User-Agent and stay within the current 10 requests/second access limit.

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SEC API (sec-api.io)

Best audience fit

Best for: Developers, quants, and compliance teams that need fast SEC/EDGAR search, streaming, XBRL conversion, section extraction, and specialized regulatory datasets.

SEC API (sec-api.io) best matches the base workflow on financial data API, fundamental research, and research reports.
SEC API (sec-api.io) keeps the replacement test in the same free-access lane. Free access caveat: signup required, trial-only access, and Free tier covers the first 100 API calls..

Watch for: Free tier is only a starter: The free tier covers the first 100 API calls, so real applications need a paid subscription quickly.

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Changeflow (Trackly)

Strong runner-up

Best for: Compliance, regulatory, and investment research teams monitoring filings, agency pages, policies, competitor pages, PDFs, RSS feeds, and API endpoints.

Changeflow (Trackly) best matches the base workflow on fundamental research, research reports, and market monitoring.
Changeflow (Trackly) keeps the replacement test in the same free-access lane. Free access caveat: signup required and Every plan has a 30-day free trial with no credit card required..

Watch for: API requires Business or Enterprise: Professional does not include API access. API and webhooks are included on Business and Enterprise plans.

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Detailed Alternatives

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Pay lessFill a gapUpgrade overall

Free tiers first, then the lowest starting price.

Best workflow fit

SEC.gov (EDGAR)

Analyst pickTested by us

Bottom line: Anyone needing the official free source for U.S. public-company filings, fund filings, insider forms, 13F reports, XBRL company facts, and bulk EDGAR archives.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

Official Sources
Improved Filings
Insider Data
Institutional Ownership

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Useful when you want to add fundamentals data, insider and institutional tracking, and news and alerts instead of mirroring the current workflow.
Free-plan limits: SEC EDGAR APIs are free and require no API key for public investor/research endpoints, SEC fair-access guidance states a current maximum access rate of 10 requests/second, and A declared User-Agent is required for automated access.
Fair-access limits: Automated users must declare a User-Agent and stay within the current 10 requests/second access limit.

Price: OpenCorporatesFree • Contact for pricing
SEC.gov (EDGAR)Free
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via support.

Open SEC EDGAR APIs Compare

Full review and details

Partial replacement

Find and update company information (Companies House)

Bottom line: Investors and researchers checking UK company filings, officers, PSCs, filing history, and official register records.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

Alerts
Official Sources
Free search and viewing of company information including registered details, officers, filing history, document images, mortgage charges, and insolvency data.
Follow companies and receive email alerts when new filings are accepted, with direct links to the filing history.

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on AI agent data access.
Free-plan limits: Public web search and company records are free, API access is free for public Companies House data, and Developer/API use requires setup, and certified documents may have fees.
Register data, not investment analytics: Companies House provides filings and company records. Users must perform their own financial analysis and normalization.

Price: OpenCorporatesFree • Contact for pricing
Find and update company information (Companies House)Free
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via support.

Search Companies House Compare

Full review and details

Partial replacement

SEC EDGAR - Company Filings (Full‑Text Search & Search Filings)

Analyst pickTested by us

Bottom line: Investors, analysts, and builders needing the primary U.S. source for company, fund, insider, ownership, prospectus, and XBRL filing data.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

IPO
Corporate Actions & Special Situations
Insider Data
Institutional Ownership

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on market monitoring.
Free-plan limits: SEC developer resources say company submissions and extracted XBRL data are available via RESTful JSON APIs on data.sec.gov, SEC fair-access guidance limits automated requests to no more than 10 requests per second, and EDGAR search and company filings are publicly accessible without a paid subscription.
Fair-access limits apply: Automated access must use a descriptive User-Agent and stay within SEC fair-access guidance, currently 10 requests per second.

Price: OpenCorporatesFree • Contact for pricing
SEC EDGAR - Company Filings (Full‑Text Search & Search Filings)Free
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via support.

Search SEC EDGAR Compare

Full review and details

CFPB Consumer Complaint DatabasePartial replacementFreeFree, no signup

Partial replacement

CFPB Consumer Complaint Database

Bottom line: Analysts researching consumer-finance companies, banks, lenders, credit bureaus, fintechs, and product/service complaint trends from an official U.S. regulatory source.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

Data Visualizations
Official Sources
Interactive explorer to filter, chart trends over time, map by geography, and read consented narratives.
The API provides complaint search, complaint-detail, and suggestion endpoints. Search results are available as JSON or CSV.

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on research reports and portfolio tracking.
Free-plan limits: The full published dataset is available as a compressed CSV file, Filtered CSV exports are limited to 100,000 complaints. CFPB retired filtered JSON exports in July 2026, and The REST API returns JSON search results and supports CSV export.
Complaints are not verified outcomes: Complaint records reflect consumer submissions and company response metadata, not adjudicated wrongdoing or investment conclusions.

Price: OpenCorporatesFree • Contact for pricing
CFPB Consumer Complaint DatabaseFree
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via homepage.

Search CFPB complaints Compare

Full review and details

Open Payments (CMS)Partial replacementFreeFree, no signup

Partial replacement

Open Payments (CMS)

Bottom line: Healthcare, pharma, medtech, and policy analysts needing official U.S. payment, ownership, and research-payment data between manufacturers/GPOs and covered healthcare recipients.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

Data Visualizations
Official Sources
Each program year has General Payments, Research Payments, and Ownership or Investment Interests datasets.
Web search/explorer with filtering and charts; program year downloads available from the portal.

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on research reports and portfolio tracking.
Free-plan limits: Program Year 2025 data is available through the search tool, dataset downloads, and API, CMS says full datasets for the previous program year are published on or before June 30 and refreshed in January, and Detailed data from 2019 through 2025 is in the search tool. Data from 2013 through 2018 is archived.
Annual publication cadence: CMS publishes the previous program year annually and refreshes after review cycles, so the data is not a real-time payment feed.

Price: OpenCorporatesFree • Contact for pricing
Open Payments (CMS)Free
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via homepage.

Open CMS Open Payments Compare

Full review and details

USAspendingPartial replacementFreeFree, no signup

Partial replacement

USAspending

Bottom line: Investors and builders needing official U.S. federal award, agency, recipient, account, and contract/grant spending data for government-exposure research.

Keep

APIs & Data Feeds
Other

Gain

Data Visualizations
Videos
Official Sources
Search and profiles for awards, recipients, agencies, and accounts, with filters for dates, performance location, NAICS, PSC, Assistance Listing, and disaster or emergency funding codes.

Lose

Regulatory Filings Monitoring
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on research reports and filings and transcript research.
Free-plan limits: API endpoint documentation says endpoints do not currently require authorization, USAspending.gov describes itself as the official open-data source of federal spending information, and Bulk downloads and API outputs are publicly available for spending-data workflows.
Not a securities dataset: USAspending tracks federal obligations, outlays, awards, and recipients, not stock prices, security identifiers, or company fundamentals.

Price: OpenCorporatesFree • Contact for pricing
USAspendingFree
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via support.

Open USAspending API Compare

Full review and details

Firefly IIIPartial replacementFreeFree, no signup

Partial replacement

Firefly III

Bottom line: Self-hosters looking for a free, open-source personal finance ledger with budgets, categories, tags, reports, imports, API access, and webhooks.

Keep

APIs & Data Feeds
Other

Gain

Portfolio
Webhooks
Self-hosted personal finance manager licensed under AGPLv3.
Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.

Lose

Regulatory Filings Monitoring
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on research reports, AI agent data access, and macro and fund research.
Free-plan limits: Firefly III documentation describes the project as free software, Self-hosting infrastructure and optional third-party bank connection setup are still user responsibilities, and AGPLv3 license obligations apply to modified hosted versions.
Self-hosting required: Users are responsible for hosting, backups, updates, authentication, and importer configuration.

Price: OpenCorporatesFree • Contact for pricing
Firefly IIIFree
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via support.

View Firefly III docs Compare

Full review and details

Trading EconomicsPartial replacementFree • From $22/moFree, no signup

Partial replacement

Trading Economics

Tested by us

Bottom line: Developers and analysts needing macro indicators, economic calendar data, markets data, forecasts, financials, Excel/Sheets integrations, and API/WebSocket delivery.

Keep

APIs & Data Feeds

Gain

Macro Data
Calendar
Alerts
News

Lose

Regulatory Filings Monitoring
Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.

Watch out

Avoid as a full replacement if you rely on research reports.
Free-plan limits: API pricing page lists Standard at $149/month billed yearly, API pricing page lists Professional at $299/month billed yearly, and Enterprise is contact-sales/customized; guest credentials provide limited sample access.
Real API use is paid: Guest credentials are limited/sample access. Standard and Professional API plans are billed yearly.

Price: OpenCorporatesFree • Contact for pricing
Trading EconomicsFree • From $22/mo
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via pricing.

Compare Trading Economics API Compare

Full review and details

FinancialReports.euPartial replacementFree • Contact for pricingFree, no signup

Partial replacement

FinancialReports.eu

Bottom line: Teams building internal research, monitoring or AI workflows from public-company filings.

Keep

APIs & Data Feeds
Regulatory Filings Monitoring

Gain

Improved Filings
IPO
Insider Data
Screeners

Lose

Other
The API portal reports more than 200 million company records collected from official public sources with source links.
The versioned REST API returns JSON by default and can return XML. API keys are required. The default allowance is 200 requests per month and 50 per day.
OpenRefine Reconciliation API matches company names with legal identifiers.
Bulk access uses SFTP and six CSV datasets: companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships.

Watch out

Avoid as a full replacement if you rely on portfolio tracking.
Free-plan limits: The web index is free to browse, A free account includes 500 API credits each month. Request types consume between 1 and 40 credits, and Pay-as-you-go use requires a card after the free credit allowance and has no monthly minimum.
Self-serve limits: Pay-as-you-go access has a two-year history window, per-endpoint rate limits, daily controls and a $1,000 monthly ceiling. Deeper history and larger workloads require an enterprise agreement.

Price: OpenCorporatesFree • Contact for pricing
FinancialReports.euFree • Contact for pricing
Free tier: Free, no signup
Replacement: Partial replacement

Pricing checked 2026-08-23 via pricing.

View API pricing Compare

Full review and details

VisualpingClosest replacementFree • From $10/moFree with signup

Closest replacement