Business & finance
Maddison Project Database
rug.nl/ggdc
Business & financefree
Long-run GDP per capita estimates stretching back two millennia. Download the Excel release and upload it when a notebook needs hard numbers on economic history.
The Maddison Project estimates GDP per capita reaching back roughly two thousand years, maintained by economic historians continuing Angus Maddison's original work, which makes it close to the only source with numbers that far back for a notebook on long-run economic growth or historical comparison. The Excel release uploads directly as a dataset. The further back the estimates go, the more they rest on sparse historical records, so figures for ancient or medieval periods should be treated as rough orders of magnitude, not precise numbers.
Import into Gemini Notebook
- 1Copy the link above (or a specific page from the site).
- 2In your notebook, click Add source → Website.
- 3Paste the link and confirm — several links can be pasted at once, one per line.
Company and market research pages often sit behind a login — the free report PDF or public blog post is usually the importable version.
More business & finance sources
- Bloomberg Terminal / Bloomberg IntelligenceProfessional market data and research behind a subscription. Exported research notes and reports can be uploaded; the terminal itself isn't importable.
- CB InsightsSubscription research on startups, venture funding, and tech markets. The free newsletter and public report PDFs are the importable part.
- CrunchbaseFunding rounds, investor lists and acquisition histories for startups. Company profile pages import cleanly as Website sources for market research notebooks.
- FactSetInstitutional-grade market data, company financials and portfolio analytics. Subscription platform — exported reports can be uploaded as PDF sources.
- FRED Economic DataThe St. Louis Fed's collection of 800,000+ economic time series. Series pages document sources and revisions — solid grounding for macro research.
- GWI (GlobalWebIndex)Syndicated consumer survey data on how audiences use social media, video, and devices across markets. Subscribers can export report PDFs for import.
- Harvard Business ReviewManagement and strategy articles grounded in academic research. Paste article URLs as Website sources; the paywall limits free reads per month.
- IBISWorldSubscription industry reports covering market size, competitive structure, and forecasts. Report PDFs make strong grounding for market-entry notebooks.
- ILOSTATILO statistics on employment, wages, and working conditions for most countries. Indicator descriptions and country profiles import well as web sources.
- IZA World of LaborShort evidence summaries on labor economics questions — each article weighs pros and cons and ends with a policy takeaway, with a downloadable PDF.
- McKinsey Global InstituteLong-form reports on productivity, technology, and the global economy. The PDF downloads work well as grounded sources for market and strategy notebooks.
- Mergent OnlineSubscription database of company financials, filings, and executive data. Export report PDFs through a library login to feed company-research notebooks.
- Nasdaq Data LinkMarket, economic, and alternative data feeds for quant work. Export CSVs from the free tier and upload them to ground financial analysis notebooks.
- National Bureau of Economic ResearchWorking papers from leading economists, often years ahead of journal publication. Paper PDFs are ideal grounded sources for economics notebooks.
- Penn World Table (PWT)The standard dataset for comparing GDP and productivity across countries back to 1950. Grab the documentation PDF too — it explains what each variable means.
- PitchBookVC, PE and M&A deal data behind a subscription. Its free blog and annual reports are still worth importing for private-market context.
- PrivCoFinancials and deal intelligence on US private companies that don't file publicly. Subscription product aimed at diligence and market sizing.
- RePEcVolunteer-run index of economics working papers and journals. Most entries link free author PDFs — often the fastest route to an econ paper's full text.
- S&P Capital IQInstitutional-grade company financials, transactions and screening from S&P. Exported reports can feed a notebook; access is subscription-only.
- Think with Google – Search & Video ResearchConsumer and media insights from Google's marketing team. Individual article and report pages import cleanly as Website sources for campaign research.
- U.S. Bureau of Labor StatisticsUS employment, wage, and inflation data. CPI releases and occupational outlooks make solid grounded sources for labor-market and economics research.
- UEFA Intelligence Centre & Landscape ReportsReports on European football's finances, transfers, and club landscape. The annual landscape report PDFs import directly as grounded sources.
- UN ComtradeBilateral import and export statistics for most countries back to 1962. Query results export to CSV; the free tier covers basic pulls.
- UNIDO Industrial StatisticsCountry-by-industry series on manufacturing output, value added, and employment. A subscription is required for full data downloads.
- World Income Inequality Database (WIID)UNU-WIDER's collection of Gini coefficients and income-share measures for 200+ countries. Grab the dataset with its companion documentation.
- YouGov ProfilesPaid audience-segmentation tool covering media habits, attitudes, and demographics. Exported reports can ground marketing personas in a notebook.