WireGuard

WireGuard is a VPN protocol and software project created by Jason A. Donenfeld. It securely encapsulates IP packets over UDP and keeps configuration close to the Unix networking model: add an interface, assign keys, define which IPs each peer may route, and send traffic through it. Initially released for the Linux kernel, it now ships maintained implementations and clients across Linux, Windows, macOS, iOS, Android, FreeBSD, and OpenBSD.

The official project is split across several repositories. Core pieces include the Linux kernel implementation, the wireguard-tools userspace utilities like wg(8) and wg-quick, the wireguard-go userspace implementation, and first-party clients for Apple, Windows, and Android. The project site also points to active work around the Rust implementation, FreeBSD and OpenBSD ports, wg-dynamic, and benchmarking tools like kbench9000.

Why fund it?

WireGuard is infrastructure that people already rely on. Bitcoin node operators and infrastructure teams use it to secure traffic between nodes and data centers. The codebase stays small enough to audit, which makes steady maintenance across kernels, userspace tools, and client platforms especially valuable.

OpenSats announced long-term support for Jason Donenfeld in September 2024. WireGuard's own donations page also lists OpenSats as a non-profit foundation donor supporting the project in 2024 and 2025. That support helps keep WireGuard development sustainable as free and open-source software.

What's next?

The project continues to ship maintenance and platform work across the mature Linux, Windows, Apple, Android, and userspace codebases while newer components keep moving. The official repository list still marks the Rust implementation, FreeBSD and OpenBSD kernel ports, wg-dynamic, and kbench9000 as active work.

If you want to dig deeper, start with the main site, the repository list, or the technical whitepaper.