Snabb: Simple and fast packet networking
https://github.com/snabbco/snabb

Snabb Switch is a simple and fast packet networking toolkit.

We are also a grassroots community of programmers and network engineers who
help each other to build and deploy new network elements. We care about
practical applications and finding simpler ways to do things.

The Snabb Switch community are active in applying modern programming
techniques, do-it-yourself operator networking, high-level device drivers, fast
userspace virtio networking, universal SIMD protocol offloads, and applying
compiler technology to networking.