| ADS-B Exchange | Content demo, Monitoring | Paid self-serve | v2 API via RapidAPI (plan prices set on RapidAPI, not stated on the site; unknown); Community API described as low cost for personal and non-commercial use; enterprise feeds are annual subscriptions with minimum commitments, no one-off extracts; historical data for subscribers only. Terms of use, acceptable use and privacy policies apply. |
| City building permit open data (Socrata and city portals) | Lead lists, Diligence, Buying signals | Free | Free public data. Socrata states it does not currently throttle requests that use an app token; requests without a token share a lower IP-based limit and get HTTP 429 when throttled. Licence: set per city, usually open data terms. |
| CourtListener | Diligence, Buying signals | Free | Free API with a token, alerts and bulk data. Default limits are low (reported 5 per minute and 125 per day since May 2026, not confirmed on the page checked); higher limits with membership or a commercial agreement. |
| EPA ECHO (Enforcement and Compliance History Online) | Lead lists, Diligence, Buying signals | Free | Free public data, web services and bulk downloads; no key stated on the pages read; no fees. Licence: US government work. Facility level, names and addresses public. |
| FAA Aircraft Registry | Content demo, Lead lists | Free | Free bulk download (public domain), daily refresh, comma-delimited text; no official API; web query per N-number. The FAA privacy program (49 U.S.C. 44114(b)) lets private owners withhold some data from public display. |
| FMCSA Motor Carrier Census (SAFER / FMCSA data) | Lead lists, Buying signals | Free | Free, public domain. Bulk CSV and Socrata API on data.transportation.gov; SAFER web snapshots; QCMobile API free with a WebKey obtained through a Login.gov account; census file refreshed monthly. No licence fee. |
| Form 5500 (US DOL dataset) | Diligence, Lead lists, Content demo | Free | Free monthly datasets (zip) with layouts and dictionaries; no API; pre-1999 or custom datasets by FOIA request, possibly with a fee. |
| Free AIS feeds (aisstream.io, AISHub) | Content demo, Monitoring | Free | aisstream.io: free API key; 3 subscribed connections per account and 3 per IP; subscription must arrive within 3 seconds; no SLA, no replay; messages dropped if not consumed; per-user bandwidth limits from September 2026. AISHub: free, but only for members who run their own AIS receiver and feed it to AISHub (station with 10 or more vessels, 90 percent uptime); 1 request per minute; commercial use allowed with credit 'Data: AISHub contributors'; raw data may not be redistributed. |
| Free satellite imagery (Sentinel-2, Landsat) | Content demo, Diligence | Free | Data is free: Copernicus Sentinel data under the Copernicus terms, Landsat in the public domain with USGS credit requested. Earth Engine is free for noncommercial research and nonprofit use; commercial use is billed through Google Cloud: Basic $500 per month (100 batch EECU-hours and 33 online included), Professional $2,000 per month, Premium custom, plus compute at $0.40 per EECU-hour list with tiered discounts and storage per GiB (pricing page, October 2026). |
| ImportGenius | Diligence, Lead lists | Paid self-serve | UI with CSV/XLSX downloads; API or exports on higher plans (details unknown). Official pages show about $229-449/mo flex plans; Global Enterprise from $1,999/mo (figures vary by source). |
| ImportYeti | Diligence, Content demo, Lead lists | Free tier or trial | Web UI with free search; API on prepaid data credits: company and supplier search free; BOL lookup 0.1 credit; company or supplier profile 1 credit per record; shipment and ranking lists 1 credit per 10 records; search used as the sole data source 0.1 credit per record; out of credits returns HTTP 403. Price per credit: not published on the docs pages read (unknown). Licence limits: unknown. Data is record level, not anonymised. |
| Maxar (now Vantor) | Content demo, Diligence | Paid self-serve | API (STAC Discovery, ordering, streaming) and web platform (MGP Pro); self-service purchase through Vantor Connect and SkyFi (third-party marketplace). Paid, quote-based; pricing not published on developer docs (unknown); per-square-kilometre archive prices are visible on SkyFi listings (third-party). Imagery is licensed under the Vantor EULA, with redistribution limits. Not anonymised; it is raw imagery. |
| NASA FIRMS (active fire data) | Monitoring, Buying signals, Content demo | Free | Free with a MAP_KEY; limit 5,000 transactions per 10-minute window, and large requests count as several. Public CSV, KML and SHP files need no key. Licence: NASA open data; attribution requested. |
| NOAA SPC storm reports | Buying signals, Monitoring, Content demo | Free | Free public data, no key, CSV and KMZ. Licence: US government work, no published restrictions found. |
| NOAA Storm Events Database (NCEI) | Diligence, Content demo, Buying signals | Free | Free public data, no key, bulk CSV downloads and web search. Licence: US government work, no published restrictions found. Not anonymised, but event level, not property level. |
| NWS active alerts API (api.weather.gov) | Buying signals, Monitoring | Free | Free, no key (User-Agent required); rate limits exist but are not published, with retry after about 5 seconds when exceeded. Licence: open data for any purpose per NWS. |
| OpenFEMA API | Buying signals, Lead lists, Diligence | Free | Free, no key, published API with no listed fees. Licence: US government open data; FEMA asks for attribution and notes it does not endorse uses. Record level for public agencies; household data is aggregated or redacted. |
| OpenSky Network | Content demo, Monitoring | Free | Free REST API for non-profit research and education: anonymous 400 credits per day, registered 4,000, active feeders 8,000, licensed users 14,400 per hour; anonymous users get only the latest state vectors at 10 s resolution, registered users up to 1 hour back at 5 s. Any use by a for-profit or commercial entity requires a written licence from OpenSky (contact at opensky-network.org); commercial pricing not published. |
| OSHA enforcement data (DOL enforcement data API) | Diligence, Lead lists, Buying signals | Free | Free with an API key; no fees. Licence: US government work. Establishment level; employer names and addresses public; injured workers are not named in the API tables. |
| Panjiva | Diligence, Content demo | Sales call | UI and enterprise data feeds through S&P Global Market Intelligence. Pricing unknown (enterprise, sales-led). |
| Placer.ai | Diligence, Content demo | Sales call | Enterprise subscription; API key with account quota; data feeds through Snowflake and SNS; pricing not public (unknown); free limited tools on placer.ai. Data is aggregated and extrapolated; no device-level data is delivered. |
| Planet Labs | Content demo, Diligence, Monitoring | Sales call | API and web platform; paid subscriptions sized by area and revisit (quota-based); education and research programs; free trial; pricing not published (unknown). Planet also serves Sentinel-2 open data. SkySat available through SkyFi (Planet Select, third-party). Licence restricts redistribution of imagery. |
| PowerOutage.us | Buying signals, Monitoring, Diligence | Sales call | Paid; pricing not published (contact by email). A 2018 trade article cited $100 a month per product (API, reports, widget), which is probably out of date. API and content terms of use published by FE Bluefire LLC; full terms could not be read. Licence limits: unknown. |
| Provenance (011-sam-110/Provenance) | Content demo, Monitoring, Diligence | Free | Open source, AGPL-3.0 (code); each data source keeps its own terms. Free hosted site, no login. CSV and GeoJSON export from the console. Undocumented-as-public internal API routes. 101 stars; created 2026-06-26, last push 2026-10-16. |
| Public ATS job board APIs | Buying signals, Lead lists | Free | Free public API per company, no key for read endpoints. |
| SBA PPP loan data | Diligence, Content demo | Free | Free bulk CSV download under U.S. Government Works licence; no API; data dictionary provided; last file date 30 September 2024. |
| SEC EDGAR full-text search | Buying signals, Diligence | Free | Free JSON endpoint behind the UI, plus UI. SEC fair-access limit of 10 requests per second with a declared User-Agent. The endpoint is not a formally documented public API. |
| SEC Form D | Buying signals, Lead lists, Content demo | Free | Free. Bulk quarterly data sets plus EDGAR filing access; SEC fair-access rules apply (10 requests per second, declared User-Agent). |
| Shovels | Buying signals, Lead lists, Content demo | Free tier or trial | API, CLI, web app (Shovels Online) and Enterprise Data License bulk. Credit-based plans Free (500 credits/month per docs), Basic, Pro, Enterprise; one credit per record returned. Paid plan prices on shovels.ai/pricing not confirmed here; third-party listings cite about $599/mo starting (unconfirmed). EDL pricing custom. |
| SkyFi | Content demo, Diligence | Paid self-serve | Self-service web app, mobile app and REST API; pay per order with no subscription or minimum spend required (per SkyFi); archive price per square kilometre and minimum area are returned per image; tasking priced per provider and resolution via POST /pricing; open data (Sentinel-1 and Sentinel-2) free. SkyFi Pro: Individual Pro from $20 per month, Enterprise Pro from $500 per month (SkyFi site, October 2026) for higher rate limits and bulk ordering. Vantor imagery requires accepting the Vantor EULA. |
| TED (EU tenders) | Buying signals, Lead lists | Free | Free API (search without key), bulk downloads and UI. Official EU publication; reuse permitted under EU open data policy. |
| TransmissionMap (Global Electrical Transmission Map) | Diligence, Content demo, Lead lists | Free | Open source; code MIT, data per upstream licence (OSM ODbL share-alike; HIFLD, EIA, Census public domain; several CC BY 4.0; Our Grid Future free for non-commercial use only; ODIN declares no licence). Free hosted map and free GeoJSON and CSV downloads. 1 star; created 2026-07-01, last commit 2026-10-15. |
| UK Companies House | Buying signals, Lead lists, Diligence | Free | Free API with an API key, rate-limited; free bulk snapshots; streaming API for real-time changes. |
| UK Find a Tender / Contracts Finder | Buying signals, Lead lists | Free | Free API (OCDS JSON) and UI, published by the UK Cabinet Office under the Open Government Licence. |
| WARN Act notices | Buying signals, Content demo | Free | Free from state agencies via UI and downloads (XLSX, PDF, HTML, varying by state). No federal central database found on the DOL page. Aggregator pricing unknown. |
| Wayback Machine | Diligence, Content demo | Free | API: free, no key, rate-limited. No published commercial pricing or SLA. Bulk WARC access exists for some collections only. |