>_ best Free Backtesting tools

The 15 top free backtesting tools in the index, ranked by upvotes.

1. 01.
   TradeOdds— Analyzes historical patterns by matching current market conditions against 30+ years of data across 2,000+ stocks, ETFs, and crypto to calculate base rates for specific moves.

   Multi-assetResearchFREE-$· ▲ 1

   [↗] visit tradeodds.io[alternatives]
2. 02.
   NineThirty— Provides AI-powered stock screening, backtesting, and market analysis integrated with real-time data feeds covering US equities, events, and sector rotation

   EquitiesScreenersFREE-$· ▲ 0

   [↗] visit ninethirty.ai[alternatives]
3. 03.
   TradingView— Provides charting, screening, alerts, backtesting, and social trading features across stocks, crypto, forex, futures, and commodities with 100+ community indicators and broker integrations.

   Multi-assetResearchFREE-$$$· ▲ 0

   [↗] visit tradingview.com[alternatives]
4. 04.
   ATLAS— Runs Monte Carlo simulations across 10,000 paths to estimate the probability a stock reaches a target return within a given time horizon

   EquitiesResearch$?· ▲ 0

   [↗] visit atlas-stocks.com[alternatives]
5. 05.
   Itô Research Grant— Provides free authenticated API access to prediction market data, basket analytics, and hosted backtesting infrastructure for researchers and academics.

   Prediction MarketsData & APIsFREE· ▲ 0

   [↗] visit itomarkets.com[alternatives]
6. 06.
   OBaI— Multi-agent platform for stock research, strategy backtesting, and prediction market analysis using MCP servers and autonomous agents

   Multi-assetResearchFREE· ▲ 0

   [↗] visit github.com[alternatives]
7. 07.
   QuantLink— Provides AI deep-research agents, institutional fundamentals, factor models, and predictive ML signals for US stocks via a unified equity terminal.

   EquitiesResearchFREE-$$$· ▲ 0

   [↗] visit quantlink.ai[alternatives]
8. 08.
   FN2— Runs autonomous AI research agents that monitor portfolios, analyze earnings transcripts, track SEC filings, and deliver scheduled briefings with citations to source data.

   EquitiesAI AgentsFREE-$$· ▲ 0

   [↗] visit fn2.ai[alternatives]
9. 09.
   TradesViz— Tracks and analyzes trades across stocks, futures, options, forex, and crypto with 600+ statistics, AI-powered insights, and auto-sync from 200+ brokers.

   Multi-assetPortfolio TrackingFREE-$$· ▲ 0

   [↗] visit tradesviz.com[alternatives]
10. 10.
    NexusTrade— Builds, backtests, and deploys algorithmic trading strategies using an AI agent that researches markets, generates strategies from natural language prompts, and executes trades via broker integrations

    EquitiesAI AgentsFREE-$$· ▲ 0

    [↗] visit nexustrade.io[alternatives]
11. 11.
    Flash Research— Provides gap analysis, stock scanning with real-time alerts, no-code backtesting, and 20+ years of historical US equity data with premarket and intraday statistics.

    EquitiesResearchFREE-$$$· ▲ 0

    [↗] visit flash-research.com[alternatives]
12. 12.
    Alva— Converts investment theses and market narratives into live playbooks with backtesting, automation, data APIs, and 24/7 agent execution

    Multi-assetAI AgentsFREE-$$· ▲ 0

    [↗] visit alva.ai[alternatives]
13. 13.
    WhaleWisdom— Tracks institutional investor 13F filings, insider transactions, 13D/13G disclosures, and mutual fund holdings with backtesting and portfolio replication tools

    EquitiesResearchFREE-$$· ▲ 0

    [↗] visit whalewisdom.com[alternatives]
14. 14.
    How Many Trades— Calculates the minimum number of trades required to validate a trading strategy's statistical significance based on win rate and risk-reward ratio

    Multi-assetResearchFREE· ▲ 0

    [↗] visit howmanytrades.com[alternatives]
15. 15.
    Kwants— Provides a self-hosted Python library for downloading Polygon flat-file data, building point-in-time ticker universes with adjustments, and running backtests against 1m/5m/daily bars using a declarative DSL for entry/exit conditions.

    EquitiesData & APIsFREE· ▲ 0

    [↗] visit kwants.dev[alternatives]