Best Free Backtesting Tools for Investors

Portfolio Visualizer

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Portfolio Visualizer is a web-based portfolio analysis suite for backtesting portfolios, testing asset allocations, running Monte Carlo simulations, optimizing allocations, analyzing factors, checking correlations, and researching funds. It is strongest for DIY investors, analysts, and advisors who want evidence for allocation, withdrawal, and risk decisions without building every model in spreadsheets. The free tier is useful but constrained, while Basic and Pro add larger portfolios, YTD results, saving, imports, exports, and commercial-use support on Pro. It is not a broker, live portfolio accounting system, or automatic rebalancing platform.

Quiver Quantitative

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Quiver Quantitative is an alternative-data platform for investors who want dashboards, screeners, alerts, backtests, and API access around political trading, insider activity, institutional holdings, lobbying, government contracts, patents, app data, ETF exposure, dark-pool activity, and related datasets. It is strongest when conventional fundamentals are not enough and users want differentiated public-disclosure signals. Web Premium and Quiver API are separate products with different prices, trials, dataset tiers, and commercial-use rules. Alternative data can be noisy and lagged, so it needs validation before being treated as a signal.

WhaleWisdom

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WhaleWisdom is a 13F, institutional ownership, insider, and hedge-fund holdings platform for investors who track filer activity, fund portfolios, watchlists, backtests, exports, and API workflows. It is useful for holdings research, but 13F data is delayed and the deeper history/API workflow is paid.

Zenvesto

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Zenvesto is a web-based stock, ETF, crypto, and benchmark portfolio tracker built around dashboards, watchlists, performance metrics, portfolio health scoring, AI-powered insights, market news, earnings calendars, CSV imports, and historical simulation. It fits stock portfolio tracker and AI portfolio tracker intent, but current public evidence supports conservative U.S. exchange coverage, finite plan limits, and manual or CSV workflows rather than broker sync. Use it when a modern dashboard and guided analysis matter more than tax-grade accounting or execution. It is not a broker, public API today, custodian sync product, wash-sale engine, or professional portfolio accounting system.

ChartMill

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ChartMill is a browser-based stock screener, charting, ratings, alerts, and research platform for self-directed traders and investors screening U.S., Canadian, and European stocks and some ETFs. It is strongest for repeatable technical and fundamental screen workflows, swing-trading ideas, watchlists, alerts, market dashboards, ChartMill ratings, and strategy templates, but paid access does not turn it into a real-time broker or full portfolio accounting system.

ETF Action

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ETF Action is an ETF analytics platform for advisors, asset managers, and ETF-focused investors who need classification, look-through holdings, overlap, flows, model portfolios, 13F screening, exports, and enterprise data workflows. Use it when ETF research and model construction need more depth than a free quote page.

ETF Research Center

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ETF Research Center is an ETF analytics site powered by AltaVista Research, focused on constituent fundamentals, valuations, overlap, stock locator workflows, portfolio building, and ETF reports. Use it when ETF analysis needs to look through the fund wrapper into holdings and fundamental exposure.

Glassnode

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Glassnode is a digital-asset analytics platform for investors, analysts, quants, and institutions that need on-chain metrics, crypto market data, derivatives data, ETF data, alerts, research, workbench charts, exports, and API delivery. It is strongest when crypto-native data matters: wallet behavior, entity-adjusted metrics, point-in-time series, futures/options context, and institutional delivery options go beyond a general price chart. The main constraint is access gating: Studio Standard and Advanced are display-oriented, exports are Professional-only, and API or Excel workflows require Professional plus an API add-on and data credits.

LuxAlgo

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LuxAlgo is a TradingView-focused technical-analysis suite for traders who want packaged indicators, price-action overlays, screeners, alerts, oscillator tools, calculators, and AI-assisted backtesting. It is built for chart-based workflows across stocks, ETFs, futures, commodities, currencies, and crypto. Use it as a technical-analysis and strategy-exploration layer, not as a broker, fundamentals platform, portfolio accounting system, or proof that a backtest will work live.

MacroMicro

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MacroMicro is a global macro and market analytics workspace for investors who want economic cycle charts, macro dashboards, ETF tools, institutional holdings views, COT flow, event calendars, correlation charts, lightweight backtesting, and AI-powered earnings summaries. It is strongest as a visual macro research platform with paid export and API paths. Plan carefully around licensing: downloads, API access, watermark-free commercial chart use, and commercial reuse rights are gated to higher-priced plans.

MarketInOut

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MarketInOut is a formula-driven stock, ETF, forex, and crypto screener with historical screening, strategy backtesting, alerts, watchlists, simple portfolio views, correlation tools, and one-time membership terms. It fits traders who want custom screening rules and backtests without a recurring monthly SaaS subscription. Free access is limited, serious workflows are paid, and it does not provide broker execution, broker sync, or automated trading.

okama

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okama is a free open-source portfolio analytics toolkit with web widgets, a REST API, and a Python library for efficient frontiers, risk metrics, Monte Carlo simulations, cash-flow modeling, and historical market or macro data. It is best for technical users who want reproducible analysis rather than a consumer portfolio tracker.

Options Profit Calculator

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Options Profit Calculator is a free web toolkit for modeling option payoff diagrams, profit/loss tables, multi-leg strategies, probability estimates, and what-if scenarios before placing trades elsewhere. It has very high search demand around options profit calculator and commercial demand around strategy calculators and backtesting, but its public profile still shows delayed 15-30 minute quotes and real-time data as coming soon. Premium beta adds advanced calculators, custom strategies, comparison tools, an options backtester, and ad-free use. It is not a broker, real-time trading terminal, options advisory service, or substitute for risk management.

QuantConnect

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QuantConnect is an algorithmic trading platform built on the open-source LEAN engine, connecting research, backtesting, cloud deployment, broker integrations, and live trading. It is built for technical Python or C# users who want multi-asset systematic trading infrastructure, not a simple retail charting app.

QuantRocket

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QuantRocket is a Docker- and Jupyter-based quant research, backtesting, data, and live-trading platform for technical Python users. It is strongest when you want local infrastructure, Interactive Brokers integration, point-in-time research, and API/CLI workflows rather than a point-and-click retail app.

Tickeron

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Tickeron is an AI-driven trading and investing platform for screeners, AI stock signals, pattern detection, paper trading, AI Robots, and short-horizon trade ideas across stocks, ETFs, mutual funds, crypto, and forex. It is useful for active idea generation and testing, but its signals and robots are not guaranteed returns, brokerage availability varies, and pricing should be checked at checkout.

TickerTrends

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TickerTrends is an alternative-data and KPI-forecasting platform for public-company investors, analysts, quant teams, hedge funds, and institutions. It combines search, web traffic, app usage, social, reviews, news, transcripts, financial data, consensus, and proprietary trend signals, but those signals are noisy proxies that require validation before investment use.

Validea

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Validea is a factor and guru-strategy research site with stock and ETF model portfolios, guru analysis, factor reports, stock and ETF screeners, trend following, market valuation, portfolio correlation, strategy/ETF matching, alerts, videos, and newsletters. It is useful for systematic idea generation, but model returns are not actual trading results and paid plan pricing is not cleanly published on the reviewed pages.

Value Sense

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Value Sense is a fundamental stock research workspace for intrinsic value tools, stock ideas, screeners, backtesting, financial charts, transcripts, AI earnings summaries, smart-money tracking, dashboards, and valuation workflows. It is useful for value-oriented research, but model outputs require review, usage is plan-gated, and it is not a broker or registered investment adviser.

Ziggma

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Ziggma is a web-based portfolio tracker and investment research workspace for self-directed investors who want account consolidation, stock and ETF screening, dividend tracking, portfolio checkups, smart alerts, impact analysis, and idea lists in one place. It fits users comparing portfolio tracker and stock portfolio tracker tools, especially when they want broker-agnostic monitoring rather than a trading app. Free access covers core research with limits; paid tiers unlock more broker links, stock scores, alerts, optimizer tools, model and guru portfolios, and larger virtual-portfolio workflows. It is not a broker, registered investment advisor, tax-lot accounting system, or full global market-data terminal.

Trendlyne

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Trendlyne is an India-first equity research and portfolio platform with screeners, DVM scores, analyst forecasts, alerts, backtests, transcripts, broker sync, and options tools. Global plans add U.S. market coverage, but the strongest fit is still Indian market research with tiered data downloads and alert limits.

FX Replay

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FX Replay is a browser-based manual backtesting and bar-replay platform for traders practicing forex, futures, crypto, commodities, and related multi-asset setups. It is strongest for discretionary strategy practice: replay sessions, multi-chart layouts, multi-pair testing, journaling, checklists, Monte Carlo, risk-reward simulation, CSV imports, and economic-calendar context help traders review execution without connecting a live broker. It is not an automated strategy engine, and seconds-level data plus broader asset coverage are Pro-gated.

Trackinsight

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Trackinsight is a global ETF research and data platform for screening, comparing, monitoring, and analyzing ETFs and ETF portfolios. It is strongest when the job is ETF due diligence, ESG/factor context, portfolio insight, or licensed ETF data delivery, not single-stock research, options analytics, broker execution, or an unrestricted public API.

GuruFocus

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GuruFocus is a value-investing research platform for investors who want global fundamentals, valuation tools, GF Score, GF Value, screeners, backtesting, guru and institutional holdings, insider trades, portfolio tracking, spreadsheet add-ins, and data/API access. It is strongest for fundamental and value-oriented research rather than brokerage execution.