Tool Comparison
Changeflow (Trackly) vs OpenCorporates
- Paid from
- $99/mo
- Free plan
- Yes
- Platforms
- Web, API, Other
Best if
- Delayed quotes won't cut it; you need real-time data
- You want alerts, news, and insider data.
- Paid from
- On request
- Free plan
- Yes
- Platforms
- Web, API
Best if
- You want other.
Start here
Changeflow (Trackly)
Free • From $1188/yr · Web · API · Other
- Delayed quotes won't cut it; you need real-time data
- You want alerts, news, and insider data.
Pick OpenCorporates instead if
OpenCorporates
Free • Contact for pricing · Web · API
- You want 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
Changeflow (Trackly) and OpenCorporates cover a lot of the same ground (2 shared categories, regulatory filings monitoring and APIs & data feeds), so for the basics you won't go far wrong with either. Changeflow (Trackly) simply does more: 10 categories to OpenCorporates's 3, including alerts, news, and insider data. OpenCorporates counters by being completely free.
What readers say
Changeflow (Trackly)
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OpenCorporates
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Key differences at a glance
- Real-time data
- Changeflow (Trackly)
- Free trial
- Changeflow (Trackly)30 days
- Broader coverage
- Changeflow (Trackly)10 vs 3 categories
- Asset coverage
- Changeflow (Trackly)Adds stocks
- Free plan
- Both
What Changeflow (Trackly) does best
- Paste a URL and describe the changes that matter in plain English.
- Use AI summaries and relevance filters to narrow website-change alerts before reviewing the source.
- Monitor SEC filings, corporate disclosures, IR pages, regulator pages, policies, PDFs, RSS feeds, JSON, CSV, and other online sources.
- Track common EDGAR filing types when their pages or feeds are configured as sources.
- Review alerts, visual diffs, change history, and saved source versions in the dashboard or email.
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 $1188/yr | Free • Contact for pricing |
Free tier | Yes | Yes |
Free trial | 30 days | — |
Plan limits | 17 limits: Free: sources: 3, Professional: sources: 100 +15 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 |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | — | No |
Integrations | Slack, Microsoft Teams +5 more | OpenRefine |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Institutional Investors, Analysts +3 more | — |
Categories covered | 10 | 3 |
Regions | North America, Europe, APAC | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | Latency: Real-time and Granularity: Minute and EOD | Latency: End of Day and Granularity: EOD |
Capabilities | AI summaries: Filings and News | — |
Security | Encryption in transit | Status page |
| Try it | Visit Changeflow (Trackly) | Visit OpenCorporates |
Standout features
The best features of Changeflow (Trackly) and OpenCorporates.ShowHide
Standout features
What Changeflow (Trackly) does best
- Paste a URL and describe the changes that matter in plain English.
- Use AI summaries and relevance filters to narrow website-change alerts before reviewing the source.
- Monitor SEC filings, corporate disclosures, IR pages, regulator pages, policies, PDFs, RSS feeds, JSON, CSV, and other online sources.
- Track common EDGAR filing types when their pages or feeds are configured as sources.
- Review alerts, visual diffs, change history, and saved source versions in the dashboard or email.
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 Changeflow (Trackly) and OpenCorporates.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksOther | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Institutional InvestorsAnalystsQuants/DevelopersAsset ManagersHedge Funds | Not specified |
Regions | North AmericaEuropeAPAC | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | 4 countries | Not specified |
| Data | ||
Data freshness | Real-time | End of Day |
Data granularity | MinuteEOD | EOD |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKeyWebhooksDocs | Auth: APIKey |
Import methods | ManualCSV | Not specified |
Integrations | SlackMicrosoft TeamsDiscordZapierMake (Integromat)n8nRSS readers (e.g., Feedly, Inoreader) | OpenRefine |
Export formats | CSVJSON | CSVJSON |
| Plans & trust | ||
Security & compliance | Encryption in transit | Status page |
Capability signals | AI summaries: Filings and News | Not specified |
Vendor & support | Changeflow LimitedCountry: United KingdomSupport: Email, Chat, and Phone | OpenCorporates LtdCountry: United KingdomFounded 2010Support: Email |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Freesources: 3 | Free“Free (personal & public-benefit use)” |
| Entry paid plan | $1188/yr≈ $99/mo“Professional”sources: 100 · users: 2 · +6 more | £225/mo“Essentials (API)”api calls per month: 500 · api calls per day: 200 · +1 more |
| Tier 2 | $2988/yr≈ $249/mo“Business”sources: 500 · users: 5 · +5 more | £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”minimum check frequency: Every 10 minutes | Contact sales“Enterprise Bulk (SFTP CSV datasets)” |
| Free trial | 30 days | — |
Questions we keep getting
What's the difference between Changeflow (Trackly) and OpenCorporates?
Changeflow (Trackly) leans toward alerts, news, and regulatory filings monitoring, 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 Changeflow (Trackly) and OpenCorporates cost?
Good news: both Changeflow (Trackly) and OpenCorporates have free plans, so you can run them side by side and only pay if you hit a wall.
Do Changeflow (Trackly) 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 Changeflow (Trackly) or OpenCorporates?
It depends on what you're after. Pick Changeflow (Trackly) if alerts and news matter to you; go with OpenCorporates if you'd rather have other. And if you only need the basics both share, let price decide.
What asset classes do Changeflow (Trackly) and OpenCorporates cover?
Both cover other. Changeflow (Trackly) also handles stocks.
Does Changeflow (Trackly) or OpenCorporates have real-time data?
Changeflow (Trackly) offers real-time data, which matters if you trade actively. OpenCorporates runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from Changeflow (Trackly) and OpenCorporates?
Yes, both export to spreadsheets (CSV), which is handy if you like running your own numbers.
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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.