VALUEFOCUS · OPEN SOURCE

Best Open-Source Investing Tools

A practical, independently ranked directory of financial data, charts, backtesting and AI research tools.

Choose tools by evidence, maintenance and data provenance—not GitHub stars alone.

How We Rank

Scores combine adoption, recent maintenance, documentation, source transparency, installation effort and research safety. Popularity figures are directional and should be verified at the source.

#1 · Financial Data97/100

OpenBB Platform

A modular open financial-data platform for research pipelines and custom terminals.

50k+Explore Tool

#2 · Charts96/100

TradingView Lightweight Charts

Production-grade financial charts with a small browser footprint.

12k+View Source

#3 · Quant Research95/100

QuantLib

A respected library for pricing, risk, fixed income and derivatives.

6k+Explore Tool

#4 · Financial Data91/100

yfinance

Low-friction market data for prototypes and personal research.

20k+Explore Tool

#5 · Quant Research92/100

Microsoft Qlib

An AI-oriented quantitative investment research platform.

36k+Explore Tool

#6 · Backtesting89/100

Backtrader

A mature Python framework for strategy backtesting and analysis.

19k+Explore Tool

#7 · Quant Research86/100

FinRL

A research framework for reinforcement learning in finance.

13k+Explore Tool

#8 · Filings88/100

SEC EDGAR MCP

Turns primary-source SEC filings into agent-callable research tools.

CommunityExplore Tool

#9 · AI Agents87/100

Financial Datasets MCP

Structured statements, prices and news through the MCP standard.

2k+Explore Tool

Put open-source research into a disciplined valuation workflow.

Explore Valuation Tools