Top ENGINE GitHub Repositories & Tools (2026)

DEX → Java decompiler in Rust — fast, progressive analysis, bilingual CLI

The world’s fastest framework for building websites.

AirPods liberated from Apple's ecosystem.

Apache Superset is a Data Visualization and Data Exploration Platform

Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

A lightweight, lightning-fast, in-process vector database

Apache DataFusion SQL Query Engine

Open-source GEO content engineering and multi-site distribution platform with AI quality inspection, illustrated admin help, hosted sites, browser-assisted publishing, and signed updates.

Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

Program for determining types of files for Windows, Linux and MacOS.

The most comprehensive Claude Code guide: agentic workflows, hooks, skills, MCP servers, quizzes, and production-ready templates. 430K+ lines.

The first open-source harness builder for AI coding. Make AI coding deterministic and repeatable.

Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

HarnessRouter Community Edition: the self-hosted, Apache-2.0 edition of the unified interface for agent harnesses. Run Codex, Claude Code, Hermes, PI, DSH, and more through one API, with sessions, streaming, files, cancellation, and failure handling. Implements the Unified Harness Protocol (UHP), an open standard. Your keys, your infrastructure.

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription.

Free and Open Source Reverse Engineering Platform powered by rizin

Plugin for JADX to integrate MCP server

Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.

Your agent invents things because it has no memory, and can't touch your database because it has no arms. rsc is the meta-harness that gives it both, plus the trade to know the job and the reflexes to not break your repo. For Claude Code, Codex and 15 more.

The open-source AI workbench for scientific research