EventMesh is a new generation serverless event middleware for building distributed event-driven applications.

A performant, declarative, and runtime-flexible web framework for Rust

Actor4j’s core implementation separates SDK and runtime, enabling flexible execution models.

Mecha SDK of Cloud Application Api. Let the code achieve "write once, run anywhere". With the help of the Capa project, your Java applications have the ability to run across clouds and hybrid clouds with small changes.

The self-hosted, runtime-neutral operations platform for Hermes and OpenClaw fleets.

ADD — Agent Driven Development. Coordinated AI agent teams that ship verified software. Spec-driven TDD, trust-but-verify orchestration, maturity lifecycle. Runs on Claude Code + Codex CLI.

Recursive agents as skills for model harnesses

Multi-runtime installer for the Ultra Builder Pro agent-engineering system — deploys commands, agents, skills, and hooks to Claude Code, OpenCode, Codex CLI, and Gemini CLI.

Runly is a multi-runtime execution tool that runs the same codebase across different JavaScript environments for compatibility testing and validation.

Phenotype-org multi-runtime CLI

AIDEN — Architecture Intake & Decision Engine