github.com/getkin/kin-openapi

The world’s fastest framework for building websites.

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

CasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system.

Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.

Slim(toolkit): Don't change anything in your container image and minify it by up to 30x (and for compiled languages even more) making it secure too! (free and open source)

API, Integration, E2E Testing Agent for Developers that actually work. Generate tests, mocks/stubs for your APIs!

Open source framework for building robust type-safe distributed systems with declarative infrastructure

Continuous Profiling Platform. Debug performance issues down to a single line of code

Go library for accessing the GitHub v3 API

Tyk Open Source API Gateway written in Go, supporting REST, GraphQL, TCP and gRPC protocols