Alternatives to Validea

Best for: Rules-based investors looking for point-in-time stock and ETF simulations.

• Portfolio123 best matches the base workflow on quant research, factor screening, and strategy backtesting.
• Portfolio123 also has a free plan, so you can try it without paying. Free-plan limits: Signup required. Free Manage module is separate from paid Research, API, and DataMiner access.

Watch for: Advanced research is paid: Free Manage covers portfolio tracking. Time-limited access covers screener and backtesting use before a paid Research plan, while API and DataMiner require separate paid access.

Uncle Stock

Best audience fit

Best for: Value and long-term investors screening global companies by financial statements, ratios, scores, and valuation models.

• Uncle Stock best matches the base workflow on stock screening, strategy backtesting, and fundamental research.
• Uncle Stock also has a free plan, so you can try it without paying. Free-plan limits: Signup required. Subscription page lists Bronze at $20/month or $130/year, Silver at $35/month or $210/year, and Gold at $60/month or $350/year.

Watch for: API is Gold-gated and capped: The JSON Search API requires Gold and is capped at 10 calls per minute and 300 calls per month unless the vendor raises the limit.

FactorsToday

Strong runner-up

Best for: Quantitative researchers studying factor returns, stock loadings, correlations, and attribution.

• FactorsToday best matches the base workflow on quant research, stock screening, and strategy backtesting.
• FactorsToday also has a free plan, so you can try it without paying. Free-plan limits: Public dashboards and API documentation can be opened without signing in.

Watch for: Pricing not published: The site exposes public tools and a no-key API but publishes no long-term access or commercial pricing policy.

Stockopedia

Strong runner-up

Best for: DIY stock investors looking for systematic Quality, Value, and Momentum ranks with broad regional coverage.

• Stockopedia best matches the base workflow on factor screening, stock screening, and fundamental research.
• Stockopedia shares Subscription pricing with the base tool.

Watch for: Subscription-only product: Stockopedia is paid after the free trial and pricing depends on regional market access.