# AltData Atlas > AltData Atlas is a free, open editorial directory of 368 alternative data providers in 20 categories, for buy-side investors and the agents they use. Each provider has a register row (category, delivery, indicative price band, free sample, verified) and a coverage record (signal type, regions, GICS sectors, approximate universe, index, ticker mapping) with a provenance tier and a date. Register as of 2026-09-24; coverage as of 2026-09-29. Licence AltData Atlas Data Licence v1. Every HTML page has a Markdown twin (append `.md`) and a JSON record under `/api`. Provenance tiers: **inferred** = editorial inference from the category, likely and unconfirmed (161 providers); **stated** = quoted from the provider's own public page with URL and crawl date (207); **confirmed** = the provider told us (0). No negative claims, no ranking, not investment advice. The register also keeps a consolidation ledger of 61 firms that were acquired, folded or went dark. Cite as: AltData Atlas (https://altdataatlas.com), an open editorial directory of alternative data providers, as of 2026-09-29. Licence AltData Atlas Data Licence v1 (https://altdataatlas.com/agents#licence). Coverage, not a census; not investment advice. Corrections: hello@altdataatlas.com (subject "[Coverage] "). Terms: AltData Atlas Data Licence v1 (https://altdataatlas.com/agents#licence) — Free to query, cite and quote with attribution to AltData Atlas and a link to https://altdataatlas.com. Individual records may be reproduced in research, analysis and AI-generated answers. Bulk redistribution of the register or the Coverage Atlas — republishing, mirroring, or bundling substantial parts of the dataset, in any format — is not permitted without written permission (hello@altdataatlas.com). Aggregate statistics published on /insights remain free to reuse with attribution. ## For agents - [Agent guide](https://altdataatlas.com/agents): endpoints, curl examples, schema, licence, citation line, changelog. - [API index](https://altdataatlas.com/api/index.json): entry point with counts, dates, every endpoint and the changelog. - [OpenAPI 3.1](https://altdataatlas.com/openapi.json): the static GET endpoints. - [Provider JSON Schema](https://altdataatlas.com/schema/provider.schema.json): the record behind /api/providers/{id}.json. - [All providers (JSON)](https://altdataatlas.com/api/providers.json): 368 compact rows — filter by category, delivery, sample, sector, region, tier. - [Companies named by providers (JSON)](https://altdataatlas.com/api/companies.json): S&P 500 / STOXX 600 companies that providers name as covered on their own pages, with source and date. - [Full register as Markdown](https://altdataatlas.com/llms-full.txt): every category and provider in one file. ## Reference (Markdown) - [All providers](https://altdataatlas.com/providers.md): one table, 368 rows. - [Categories](https://altdataatlas.com/categories.md): 20 categories with counts and one-line definitions. - [Coverage Atlas](https://altdataatlas.com/coverage.md): signal type × GICS sector matrix and every cell page. ## Categories - [Card & Transactions](https://altdataatlas.com/category/card-transactions.md): 17 providers. Card and transaction data is anonymised consumer payment activity — card swipes, bank transfers, and account records — aggregated into panels that estimate a company's revenue before it is reported. - [Web & Pricing Data](https://altdataatlas.com/category/web-pricing.md): 34 providers. Web and pricing data is information collected from public websites at scale: product prices, assortment, stock status, and site traffic, captured daily and structured for analysis. - [News & Sentiment](https://altdataatlas.com/category/news-sentiment.md): 41 providers. News and sentiment data is text — news articles, regulatory filings, earnings-call transcripts, and social media — scored by algorithms into structured measures of tone, relevance, and novelty for companies and markets. - [Foot Traffic & Mobility](https://altdataatlas.com/category/foot-traffic.md): 28 providers. Foot traffic and mobility data is anonymised location information from mobile devices, aggregated to measure visits to stores, venues, and regions over time. - [ESG & Climate](https://altdataatlas.com/category/esg-climate.md): 9 providers. ESG and climate data is independent measurement of a company's environmental, social, and governance exposure — emissions, controversies, and physical climate risk — compiled from sources beyond the company's own disclosure. - [Satellite & Geospatial](https://altdataatlas.com/category/satellite-geospatial.md): 28 providers. Satellite and geospatial data is imagery of the Earth's surface and the measurements derived from it — ships in ports, cars in parking lots, crop health, construction activity — converted into countable investment signals. - [Supply Chain & Shipping](https://altdataatlas.com/category/supply-chain.md): 20 providers. Supply chain and shipping data is the record of goods in motion: vessel positions, port calls, bills of lading, and freight rates, assembled to show what is being shipped, where, and by whom. - [Jobs & Workforce](https://altdataatlas.com/category/jobs-workforce.md): 14 providers. Jobs and workforce data is information on hiring and employment — job postings, employee profiles, headcount, and attrition — collected from public sources and read as a signal of a company's plans. - [Weather & Agriculture](https://altdataatlas.com/category/weather-agriculture.md): 13 providers. Weather and agriculture data is measurement and forecasting of physical conditions — temperature, rainfall, soil moisture, crop health — organised to predict commodity supply and weather-sensitive demand. - [App Usage & Downloads](https://altdataatlas.com/category/app-usage.md): 14 providers. App usage data is estimated measurement of mobile application adoption — downloads, active users, engagement, and in-app revenue — derived from device panels and app-store statistics. - [Email Receipts](https://altdataatlas.com/category/email-receipts.md): 5 providers. Email receipt data is purchase information extracted from order confirmations in anonymised consumer email inboxes, aggregated into panels that track spending merchant by merchant. - [Credit & Lending](https://altdataatlas.com/category/credit-lending.md): 14 providers. Credit and lending data is information on borrowing: loan originations, delinquencies, consumer credit health, and private credit flows, aggregated from lenders, servicers, and credit files. - [Public Records & Filings](https://altdataatlas.com/category/public-records.md): 34 providers. Public records and filings data is government-held information — regulatory filings, court dockets, lobbying disclosures, and contract awards — parsed into structured, searchable form. - [Expert Networks & Surveys](https://altdataatlas.com/category/expert-networks.md): 24 providers. Expert network and survey data is primary research: paid consultations with industry practitioners, and the quantified surveys and transcript libraries built on that access. - [Sensors & IoT](https://altdataatlas.com/category/sensors-iot.md): 13 providers. Sensor and IoT data is telemetry from connected devices and industrial equipment — energy meters, machinery, vehicles — aggregated into measures of physical economic activity. - [Crypto & On-Chain](https://altdataatlas.com/category/crypto-onchain.md): 14 providers. Crypto and on-chain data is the public record of blockchain activity — transactions, wallet flows, and exchange balances — combined with market data from digital-asset venues. - [Healthcare & Clinical](https://altdataatlas.com/category/healthcare-clinical.md): 18 providers. Healthcare and clinical data is anonymised medical activity — insurance claims, prescription flows, and clinical-trial progress — aggregated to track drug uptake and healthcare demand. - [Private Markets Signals](https://altdataatlas.com/category/private-markets.md): 15 providers. Private markets data is information on companies that do not report publicly — funding rounds, valuations, revenue estimates, and operating metrics — assembled from filings, investors, and proprietary research. - [Auto & Vehicle Data](https://altdataatlas.com/category/auto-vehicle.md): 3 providers. Auto and vehicle data is measurement of the car market: new- and used-vehicle prices, inventory, registrations, and valuations, tracked across dealers and registries. - [Estimates, Events & Fund Flows](https://altdataatlas.com/category/estimates-events-flows.md): 10 providers. Estimates, events, and fund-flow data is market metadata: analyst consensus, corporate-event and dividend calendars, and records of money moving in and out of funds. ## Optional - [Glossary](https://altdataatlas.com/glossary): each category defined in one sentence. - [Atlas Briefing](https://altdataatlas.com/insights): the market counted — supply by category, pricing opacity, founding vintages, delivery, consolidation ledger. - [coverage.json](https://altdataatlas.com/coverage.json): the whole coverage dataset in one file. - [Changelog](https://altdataatlas.com/api/changelog.json): 2026-09-30 Agent layer; 2026-09-29 Coverage Atlas; 2026-09-24 Register +2 providers from inbound listing requests.