Lightweight DNS forwarder and DHCP server for small networks, written in C.

Command-line utility for managing container images across registries without requiring root or a daemon.

Virtual Distributed Ethernet switch and networking toolkit for connecting virtual machines and emulators.

Shared library providing NIS/YP client interface, separated from glibc with IPv6 support via TI-RPC.

High-performance asynchronous HTTP client library written in C, used as a dependency for Subversion and other tools.

User-mode networking for unprivileged Linux network namespaces, enabling rootless containers to access the network without root privileges.

User-mode networking daemon for VMs and Linux namespaces, translating layer-4 sockets without a TAP device.

Go command-line tool for inspecting, copying, and manipulating container images and registries without requiring Docker.

Command-line tools for configuring and managing WireGuard VPN tunnels.

Go command-line credential helper that automatically authenticates Docker daemon connections to Amazon ECR.

Anonymizing overlay network daemon that routes TCP traffic through encrypted relays for privacy.

SSH client and server implementation with secure remote shell, file transfer, and tunneling.

Network diagnostic combining traceroute and ping in a single interactive tool.

Open-source Remote Desktop Protocol (RDP) client and server library for X11 and other platforms.

Open-source SSL/TLS VPN daemon implementing OSI layer 2 or 3 secure network extension.

Command-line tool to interact with Stripe APIs, trigger webhooks, and manage Stripe resources locally.

Command-line gRPC client for invoking gRPC services and inspecting server metadata, similar to cURL for HTTP APIs.

Python tool to automatically obtain and renew TLS certificates from Let's Encrypt and enable HTTPS.

C library implementing the Process Management Interface Exascale (PMIx) standard for HPC process coordination.

C library and tools for HTTP/2 protocol implementation with command-line client and server utilities.

Apache Kafka C/C++ client library for high-performance producers and consumers.

C library for WebSocket servers and clients with HTTP/2, QUIC, and TLS support.

High-performance C library for event-driven programming with support for multiple I/O multiplexing backends.

Go utility for secure IAM-authenticated connections to Google Cloud SQL instances with TLS 1.3 encryption.

Transparent proxy VPN over SSH without remote admin access, written in Python.

High-performance, distributed in-memory cache daemon for frequently-accessed data.

Command-line utility for managing and configuring Istio service mesh deployments on Kubernetes.

Lightweight BitTorrent client command-line interface for downloading and seeding torrents.

C library for HTTP client/server functionality built on GLib, with async I/O and cookie/session handling.

Header-only C++ binding for ZeroMQ (libzmq) messaging library.

Open-source client for Cisco AnyConnect SSL VPN connections from the command line.

C library for reading MaxMind DB geolocation and IP intelligence database files.

SMB/CIFS file, print, and login server for UNIX — implements Windows file sharing and authentication protocols.

Wi-Fi network auditing and WEP/WPA password cracking tool suite written in C.

Command-line FTP/SFTP/HTTP client with job queueing, mirroring, and scripting support.

Network extensions for GLib, including TLS and certificate validation via GnuTLS.