Top FRAMEWORK GitHub Repositories & Tools (2026)

TypeScript-first framework for the Model Context Protocol (MCP). You write clean, typed code; FrontMCP handles the protocol, transport, DI, session/auth, and execution flow.

The source code of Axelix - a Delta Force for your Spring Boot ecosystem

An agentic runtime

Understand what your codebase builds, why it is structured that way, and what a change could affect. One shared Markdown ontology for humans and coding agents—visualized for people, accessible to agents through MCP, and reviewed with Git. Local-first. Open source.

BioDynaMo is a high-performance and modular, agent-based simulation platform.

A simple and powerful entity component system (ECS) written in C++17

Turtles all the way down

:sparkles: A Java library for applications software infrastructure

S + Autograd + XLA :: S-parameter based frequency domain circuit simulations and optimizations using JAX.

A C# RPC framework built for QUIC, with bidirectional streaming, first-class async/await, and Protobuf support.

Benchmarking and monitoring automation, designed for cloud, built with .NET.

An AVPlayerItem subclass that lets you stream and cache media content on iOS, macOS, tvOS and visionOS.

Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP/A2A Support

Generic Linked Data browser and UX component framework. Apache license.

Kieker is an observability framework, that consists of an monitoring and tracing agent, and compatible analysis tools

Play Ebean module

Win32++: A C++ library for building Windows desktop applications using the Windows API.

A modular, extensible 2D game framework for .NET.

ATON framework is based on modern web standards and technologies to create interactive, liquid and collaborative Web3D/WebXR apps targeting Cultural Heritage field. It adopts a “develop once, deploy everywhere” approach, providing building-blocks and a modular architecture

WebCore, the super tiny and blazingly fast modular Python web nanoframework.