Open Source Finance & Fintech Tools

Alternative toLSEG Workspace (formerly Refinitiv Eikon)

Open source AI research workspace for financial analysis

• 74,512 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toSeeking Alpha Premium

AI-driven stock analysis for A, HK, and US markets

• 66,786 GitHub stars
• MITLicence MIT
• #LLM

Alternative toMonarch Money

Track finances and investments with AI insights, self-hosted

• 54,294 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toLSEG Workspace (formerly Refinitiv Eikon)

Open source foundation model for financial candlestick data

• 40,317 GitHub stars
• MITLicence MIT
• #LLM

Alternative toAmazon Kendra

AI-powered document understanding with explainable retrieval

• 39,352 GitHub stars
• MITLicence MIT
• #LLM

Alternative toQuantConnect

Rust-native trading engine with research-to-live parity

• 30,380 GitHub stars
• LGPL-3.0Licence LGPL-3.0

InCustomer Support

Fast, type-safe C++ formatting that replaces printf and iostreams

• 25,884 GitHub stars
• MITLicence MIT

Alternative toDocuSign

Open source document signing and fillable PDF forms

• 18,756 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toInfluxDB Cloud

Ingest high-frequency data and query it in real time with SQL

• 17,454 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Database

Alternative toStripe Billing

Usage-based billing API for metered and hybrid SaaS pricing

• 10,699 GitHub stars
• AGPL-3.0Licence AGPL-3.0