GoBGP is an open source Border Gateway Protocol (BGP) implementation designed from scratch for modern environment and implemented in a modern programming language, the Go Programming Language.

Semgrep is a fast, open-source, static analysis tool for finding bugs and enforcing code standards at editor, commit, and CI time. Get started →.

Semgrep analyzes code locally on your computer or in your build environment: code is never uploaded.

Its rules look like the code you already write; no abstract syntax trees, regex wrestling, or painful DSLs. Here's a quick rule for finding Python print() statements, run it online in Semgrep's Playground by clicking the image:

Semgrep rule example for finding Python print() statements

The Semgrep ecosystem includes:

Semgrep - the open-source command line tool at the heart of everything (this project)
Semgrep CI - a specialized Docker image for running Semgrep in CI environments
Semgrep Playground - an online interactive rule builder for writing and sharing rules
Semgrep Registry - 2,000+ community-driven rules covering security, correctness, and performance bugs
Semgrep App - deploy, manage, and monitor Semgrep at scale with free and paid tiers.

Join 100,000 other developers and security engineers already using Semgrep at companies like Chef, Dropbox, Figma, HashiCorp, Snowflake, and Trail of Bits. Also check out tools powered by Semgrep!

Semgrep is developed and commercially supported by r2c, a software security company.
Language support
General availability

C# · Go · Java · JavaScript · JSX · JSON · PHP · Python · Ruby · Scala · TypeScript · TSX

NATS Server is a simple, high performance open source messaging system for cloud native applications, IoT messaging, and microservices architectures.

gVisor is a user-space kernel, written in Go, that implements a substantial portion of the Linux system surface. It includes an Open Container Initiative (OCI) runtime called runsc that provides an isolation boundary between the application and the host kernel. The runsc runtime integrates with Docker and Kubernetes, making it simple to run sandboxed containers.

gVisor takes a distinct approach to container sandboxing and makes a different set of technical trade-offs compared to existing sandbox technologies, thus providing new tools and ideas for the container security landscape.

hey is a tiny program that sends some load to a web application.

hey was originally called boom and was influenced from Tarek Ziade's tool at tarekziade/boom. Using the same name was a mistake as it resulted in cases where binary name conflicts created confusion. To preserve the name for its original owner, we renamed this project to hey.

demo song "Guide Me Home" / "How Can I Go On"

All Systems Go! is an open source community conference focused on the projects and technologies at the foundation of all modern Linux systems, specifically, low-level user-space technologies. Its goal is to provide a friendly and collaborative gathering place for individuals and communities working to push these technologies forward.

All Systems Go! is a 2-day event with 2 talks happening in parallel. Full presentation slots are 30-45 minutes in length and lightning talk slots are 5-10 minutes.

The Go programming language is an open source project to make programmers more productive.

Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.