Best Investing Tools with a Free Tier

SEC.gov (EDGAR)

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SEC.gov EDGAR is the official free source for U.S. public-company filings, fund filings, insider forms, 13F reports, full-text filing search, RSS feeds, bulk archives, and no-key public JSON APIs. It is the baseline source for filings research and data validation, but it is raw official infrastructure rather than a polished commercial research terminal.

PortfoliosLab

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PortfoliosLab is a web-based portfolio analytics platform for backtesting, optimization, risk metrics, correlations, screeners, and AI-assisted portfolio workflows. It is useful for comparing stocks, ETFs, funds, crypto, and model portfolios, with more history, imports, exports, and MCP access gated by paid tiers.

Fiscal.ai

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Fiscal.ai is an AI-assisted public-company research terminal and financial data API platform for investors, analysts, developers, and AI-agent builders. It combines global fundamentals, segments and KPIs, transcripts, filings, estimates, dashboards, screeners, valuation workflows, AI Copilot, REST APIs, webhooks, and MCP access.

Portfolio Performance

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Portfolio Performance is a free, open-source, local-first desktop portfolio tracker for investors who want detailed performance accounting, TTWROR/IRR reporting, multi-currency support, rebalancing, imports, exports, and privacy without broker credential sync. It is strongest for hands-on investors willing to maintain transactions locally, while the mobile app is mainly a read-only companion unless optional dashboard subscriptions are used.

Stock Rover

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Stock Rover is a web-based stock, ETF, fund, and portfolio research platform for investors who want 800+ financial metrics, 20 years of historical fundamentals, deep portfolio analytics, dividend tracking, automated DCF-driven intrinsic value and Margin of Safety tools, printable research reports, stock ratings, broker-linked portfolios, and alerts. It is strongest for North American fundamental research and portfolio management, not for trade execution or full strategy backtesting.

FinancialReports.eu

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FinancialReports is a public-company filings database, filings API, and hosted MCP server for analysts, AI-agent builders, and data teams that need fast document ingestion, Markdown extraction, watchlist alerts, webhooks, and filing Q&A across global markets. It is strongest when the workflow starts with filings rather than price charts: company documents, insider trades, IPO references, filing feeds, and programmatic document access are the center of the product. The web index is free to browse, while serious API, MCP, webhook, redistribution, and production workflows are contact-sales.

FRED (Federal Reserve Economic Data)

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FRED (Federal Reserve Economic Data) is the free macroeconomic time-series database from the Federal Reserve Bank of St. Louis, used by students, investors, analysts, quants, and product builders who need trusted economic data, charts, release calendars, Excel access, mobile apps, and a REST API. It is strongest for official macro context around inflation, rates, GDP, employment, exchange rates, credit, and market indicators rather than equity fundamentals or brokerage workflows. API users need a free API key, and usage remains subject to FRED terms and source-specific data restrictions.

Stock Unlock

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Stock Unlock is a global stock and ETF research platform that combines stock scores, screeners, DCF tools, comparison charts, watchlists, and portfolio tracking. It is built for retail investors who want research and portfolio context together, with deeper history and broker links moving behind paid plans.

TIKR

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TIKR is a browser-based global equity research terminal for investors who care about fundamentals, financial statements, analyst estimates, valuation work, transcripts, filings, and stock screening. It is strongest for long-term stock research across global markets, with paid plans unlocking the deeper history, broader coverage, exports, and workflow limits that serious investors usually need.

DATAROMA

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DATAROMA is a free, focused tracker for superinvestor 13F portfolios, recent portfolio changes, and insider buying activity. Use it for value-investing idea discovery and manager-following workflows, then verify timing, filings, and fundamentals before acting.

Marketgenius

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Marketgenius is a free, mobile-friendly stock heatmap and lightweight stock dashboard site for quick visual discovery. It focuses on major U.S. index heatmaps, superinvestor portfolio heatmaps, simple stock fundamentals, ownership stats, valuation metrics, dividend details, short interest, and basic scores. Use it as a fast visual starting point, not as a full screener, deep financial terminal, broker, API, or valuation platform.

Portfolio123

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Portfolio123 is a rules-based quant research and portfolio-management platform for investors who want stock and ETF screeners, ranking systems, factor research, realistic backtests, strategy simulations, portfolio tracking, broker connectivity, and API/DataMiner access. It is strongest for systematic investors who want point-in-time research workflows without building everything from code.

Roic AI

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Roic AI is a financial data, stock research, and API platform for investors and developers who want company financials, transcripts, news, screeners, exports, spreadsheet endpoints, AI research assistance, and MCP or ChatGPT workflows. It is strongest for fundamentals and agent-ready data access, with worldwide coverage on every plan, but plan differences matter for rate limits, history depth, transcript depth, and commercial API use.

EODHD

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EODHD is a market-data API provider for developers, quants, and analysts who need REST, WebSocket, spreadsheet, and AI-agent access to historical prices, fundamentals, calendars, news, sentiment, options, forex, crypto, and other financial datasets. It is strongest for API-first data workflows, but free usage is tiny, commercial licensing is separate, and some datasets require add-ons or marketplace plans.

Short Interest - FMM

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Short Interest - FMM is Find My Moat’s free high-short-interest stock tracker for users who want a quick searchable list of U.S. stocks with short interest above 20%. It is strongest for first-pass short-interest and short-squeeze discovery inside Find My Moat, with a sortable table and plain-English education, but it depends on an upstream source and is not a trade signal, export feed, or API.

Financial Modeling Prep (FMP)

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Financial Modeling Prep (FMP) is a market-data API and spreadsheet-data provider for developers, analysts, quants, and product builders who need equities, ETFs, funds, FX, crypto, commodities, macro, ESG, ownership, news, calendars, transcripts, and fundamentals from one vendor. It is strongest when you want REST and WebSocket access plus Excel and Google Sheets add-ins at a lower entry price than enterprise terminals. The main buying questions are plan limits, geography, history depth, and dataset access: the free Basic tier is a limited EOD sandbox, while real-time, global, transcript, 13F, holdings, intraday, and bulk workflows require paid tiers.

ECB Data Portal

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ECB Data Portal is the official free European Central Bank source for ECB statistics, euro area macro data, interest rates, exchange rates, yield curves, downloads, charts, and SDMX API access. Use it when you need primary-source European macro data rather than a commercial terminal summary.

OpenBB

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OpenBB combines an open-source financial data layer with a hosted Workspace for dashboards, AI research, custom agents, and team workflows. It is best for analysts, quants, developers, and firms that want to connect their own market data, internal datasets, provider API keys, widgets, MCP tools, and AI workflows instead of buying a closed terminal. Community access is useful for individuals, while Pro adds collaboration, exports, Excel, RBAC, SSO, MFA, and private deployment options. OpenBB does not provide production market data itself; it orchestrates connectors, your data, and your vendor access.

Ahrefs

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Ahrefs is an SEO and marketing intelligence platform that investors can use as alternative data for digital businesses, marketplaces, publishers, SaaS companies, and consumer brands where search visibility and web demand matter. It is strongest for website traffic estimates, keyword demand, backlinks, content visibility, API exports, and AI-brand visibility, but it is not an investing terminal, valuation model, portfolio tracker, or source of official company fundamentals.

Alpha Vantage

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Alpha Vantage is an API-first financial data provider for developers, students, quants, and analysts who need a simple API key for stock, ETF, mutual fund, FX, crypto, options, commodities, fundamentals, news, sentiment, and macroeconomic datasets. It is strongest for learning, prototypes, spreadsheets, and personal API workflows, but the free quota is small, premium endpoints require membership, and commercial use needs separate licensing.

Diffchecker

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Diffchecker is a document-comparison tool for text, Word files, PDFs, Excel files, images, folders, APIs, and desktop workflows. Use it in investing work when you need fast redlines for filings, research drafts, models, contracts, or disclosure changes, not when you need financial data itself.

Google Trends

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Google Trends is a free search-interest research tool for investors, operators, marketers, and analysts who want to monitor attention, demand proxies, brand momentum, consumer themes, and news-driven spikes across regions and time. It is strongest as context: search interest can support alternative-data research, but the values are normalized relative indexes rather than exact query volumes or revenue data. The web UI is broadly available, while official API access is limited and the BigQuery dataset covers selected top and rising queries.

IPO Watch (ipowatch.in)

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IPO Watch is a free India IPO news and tracking site for mainboard IPOs, SME IPOs, IPO GMP, subscription updates, allotment guidance, listing outcomes, and related corporate-action news. It is a useful retail-friendly starting point for IPO calendars, GMP today queries, allotment-status workflows, and quick listing-gain context. Because GMP is unofficial and the site is not a broker or SEBI-registered advisory product, users should verify figures against official exchanges, registrars, RHPs, and broker application pages.

Office of Financial Research (U.S. Treasury)

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Office of Financial Research is a free U.S. Treasury source for official financial-stability monitors, stress indicators, short-term funding data, money-market fund transparency, bank systemic-risk views, and hedge-fund monitor datasets. It is useful for macro, risk, policy, and market-structure research where documented methodology and public JSON or CSV access matter more than a polished investing app. OFR data is generally monitor-specific and often end-of-day or lagged. It is not a real-time market-data feed, stock research terminal, broker, portfolio tracker, or broad trading dataset.

Testfol.io

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Testfol.io is a free web-based portfolio backtesting and analysis toolkit for investors who want to test allocations, cashflows, rebalancing rules, tactical signals, leverage, correlations, and historical risk/return before moving to a spreadsheet or paid analytics suite. It is strongest for portfolio-level experimentation rather than intraday monitoring or live account management. Anonymous use is available, while a free account unlocks higher limits, cloud saves, and sign-in-gated tools. Backtests depend on historical assumptions and end-of-day data, so they are not trade execution or forward-looking guarantees.

Quartr

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Quartr is a qualitative public-market research platform for earnings calls, real-time transcripts, filings, reports, slide decks, analyst estimates, AI chat, and investor-relations data. The mobile app is useful for free earnings-call and transcript access, while Quartr Pro and Quartr API serve professional research, MCP, webhook, and data-integration workflows.

10X EBITDA - Hedge Fund Presentations

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10X EBITDA - Hedge Fund Presentations is a free archive of value-investing, activist, and hedge-fund pitch decks for people who want to study how professional investors build stock theses. It is best treated as an educational idea and case-study library, not as a live market-data product, screener, portfolio tool, or source of current investment recommendations.

Damodaran - Cost of Capital by Sector (US)

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Damodaran - Cost of Capital by Sector is a free NYU Stern industry WACC table for analysts who need a credible sector baseline for DCF models and cost-of-capital work. It provides beta, cost of equity, cost of debt, capital structure, tax-rate, and WACC estimates by U.S. industry, but it is an annual spreadsheet-style dataset rather than a company-specific WACC engine or live market-data tool.

Dividend Watch

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Dividend Watch is a web-based dividend and portfolio tracker for long-term income investors who want dividend forecasts, calendars, DRIP tracking, safety scores, stock and ETF research, and broker sync in one place. It is strongest for dividend portfolio planning and paid safety-score workflows, while the free tier is intentionally small and the platform is not a broker or real-time market terminal.

ETF Insider

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ETF Insider is a web-based ETF, mutual fund, and stock portfolio visualization tool for investors who want to see holdings overlap, concentration, correlations, factor exposure, and efficient-frontier style portfolio tradeoffs. It is strongest for diagnosing hidden ETF overlap in U.S.-listed portfolios, with full holdings depth, Excel export, API access, and white-label options gated by Pro or Enterprise plans.

Interactive Brokers (IBKR)

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Interactive Brokers (IBKR) is a global multi-asset brokerage platform for active investors, professionals, quants, and institutions who need broad market access, advanced order types, SmartRouting, APIs, paper trading, and portfolio analytics. It is strongest for serious execution and automation workflows, but commissions, market-data subscriptions, product availability, and API limits vary by market, account type, and jurisdiction.

OpenInsider

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OpenInsider is a free, utilitarian SEC Form 4 insider-trading screener for investors who want to monitor insider buying, insider selling, cluster buys, and transaction reports without paying for a data terminal. It is useful for fast first-pass insider activity research, but the interface is table-heavy and there is no formal paid support, SLA, mobile app, or documented public API.

Revolut (Invest)

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Revolut Invest is the investing surface inside Revolut’s broader money app, built for eligible users who want simple mobile access to stocks, ETFs/ETPs, bonds, crypto, commodities, alerts, news, and basic portfolio tracking. It is strongest for existing Revolut customers and beginner-friendly investing, but fees, asset availability, Trading Pro, crypto, commodities, and robo-advisor access vary heavily by country, entity, and plan.

Fintel

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Fintel is a market-signal research platform for investors who want short interest, off-exchange volume, institutional ownership, insider trades, ETF exposure, options sentiment, filings, screeners, dashboards, alerts, APIs, and AI-assisted research in one place. It is strongest for ticker-level signal pages and ownership/short-interest workflows that help explain positioning, crowding, and unusual activity before deeper fundamental work. Many premium datasets, AI workflows, exports, options flow, and portfolio tools are tier-gated, and the signals should be treated as research inputs rather than investment recommendations.

Snowball Analytics

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Snowball Analytics is an EU-based portfolio and dividend tracker for retail investors who want multi-asset tracking, broker import, dividend analytics, benchmarking, fund look-through, backtesting, and mobile access. It is useful for long-term portfolio monitoring, but it is not a broker, registered investment adviser, tax filing product, or professional performance-composite system.

Trading Economics

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Trading Economics is a macro and markets data platform for browsing economic indicators, calendars, forecasts, market data, company financials, news, ratings, and corporate events, with paid REST API, WebSocket, spreadsheet, BI, and AI-assistant integrations. It is strongest for developers, analysts, and teams building dashboards, alerts, research apps, and macro data pipelines from one source. Guest credentials provide limited sample access, while Standard, Professional, and Enterprise plans govern real API use, streaming, rate limits, row limits, and commercial rights. It is data infrastructure, not a broker or investment-advice service.

Alpha Spread

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Alpha Spread is a value-investing research platform for investors who want quick intrinsic value estimates, DCF and relative valuation, stock reports, screeners, watchlists, alerts, analyst forecasts, and AI-assisted company questions. It is strongest for first-pass fair-value research, but free usage is metered weekly and automated valuation outputs should be reviewed as assumptions, not final investment decisions.

AUM 13F

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AUM 13F is a due-diligence web app for researching asset managers, institutional holdings, private funds, real estate managers, and limited-partner relationships from public filing sources. It is strongest for analysts who want a low-cost way to browse manager AUM, 13F holdings, EDGAR filings, IAPD records, CAFR-sourced LP portfolios, source links, portfolios, and alerts, but 13F data remains delayed and incomplete by design.

Beanvest

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Beanvest is a quality-investing research app for long-term investors who want opinionated stock reports, a proprietary Quality Score, component scores, fair value labels, and a compact quality-stock screener. It is strongest for investors who like a framework around moat, pricing power, predictability, financial strength, capital allocation, and management, but coverage is selective, premium fair-value data is gated, and there is no free trial or refund policy in the current profile.

Berkshire Hathaway Archive (Memorex)

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Berkshire Hathaway Archive by Memorex is a free searchable document archive for Warren Buffett shareholder letters and Berkshire Hathaway annual meeting transcripts. It is strongest for value investors, students, and researchers who want semantic search across Berkshire source material on capital allocation, incentives, moats, management, insurance, and long-term investing, but it is a single-company archive rather than a market-data product or general transcript database.