Developer Open Source Tools

Alternative toRevEng.AI

AI skill router for reverse engineering and penetration testing

• 42,784 GitHub stars
• MITLicence MIT

Alternative toMotherDuck

Fast in-process SQL analytics database, no server needed

• 42,318 GitHub stars
• MITLicence MIT
• #Database

Alternative toKhanmigo

Agentic framework for lifelong personalized tutoring

• 41,900 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toIntel oneAPI C++ Compiler

Modular compiler infrastructure behind Clang, Rust, and Swift.

• 41,148 GitHub stars
• CustomLicence Apache-2.0 with LLVM Exceptions

Alternative toRetool

Build internal tools with a drag-and-drop UI and 50+ connectors

• 41,110 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #No Code

Alternative toClaude Code

A coding agent that lives in your terminal.

• 41,099 GitHub stars
• MITLicence MIT

Alternative toRetool

Build internal tools with a low-code drag-and-drop UI

• 41,095 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toUnstructured.io

Convert documents to clean markdown and JSON with open source AI.

• 40,566 GitHub stars
• Apache-2.0Licence Apache-2.0
• #LLM

Alternative toAmplitude

Track events, replay sessions, and run A/B tests, self-hostable

• 40,361 GitHub stars
• MITLicence MIT

Alternative toLSEG Workspace (formerly Refinitiv Eikon)

Open source foundation model for financial candlestick data

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

Alternative toSnagit

Screenshot and record with 80+ upload destinations on Windows

• 40,240 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toCourier

Open source notification infrastructure for product teams

• 40,175 GitHub stars
• MITLicence MIT