Grpc GitHub Repositories (2026) · Open Source Tools

Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

Catch API bugs before your users do

Tetiva — desktop API client for HTTP, gRPC, GraphQL and WebSocket (Wails v3 + Vue 3)

GO Simple Tunnel - a simple tunnel written in golang

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

Talos Linux is a modern Linux distribution built for Kubernetes.

The Cloud-Native API Gateway and AI Gateway

eBPF-powered network observability for Kubernetes. Indexes L4/L7 traffic with full K8s context, decrypts TLS without keys. Queryable by AI agents via MCP and humans via dashboard.

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

An implementation of the ConnectRPC, gRPC, and gRPC-Web for Rust

The Go language implementation of gRPC. HTTP/2 based RPC

Triton's Dragon's Mouth Yellowstone gRPC service for high-performance Solana streaming

The first open-source AI-driven tool for automatically generating system-level test cases (also known as fuzzing) for web/enterprise applications. Currently targeting whitebox and blackbox testing of Web APIs, like REST, GraphQL and RPC (e.g., gRPC and Thrift).

The Go implementation of Connect: Protobuf RPC that works.

Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents

An open-source authorization as a service inspired by Google Zanzibar, designed to build and manage fine-grained and scalable authorization systems for any application. — Permify is now part of FusionAuth 🎉

A native gRPC client & server implementation with async/await support.

Terminal API client for HTTP, GraphQL, gRPC, WebSocket and SSE. Plain .http files you can diff and version, with scripted tests, workflows, mocks, recorder, and a CLI runner for CI.

Fast, native API client for REST, gRPC, WebSocket and GraphQL. A local-first Postman alternative written in Go: no Electron, no account, no cloud.

KEDA External gRPC Scaler for GPU workloads - native NVML metrics via DaemonSet, no Prometheus required