CoreDNS

SmartDNS is an open-source local DNS server that sends client queries to multiple upstream DNS servers, measures the returned address candidates, and returns the fastest result to the client. It supports separate virtual DNS servers with different ports, rules, and clients; per-client rules based on IP or MAC address; domain routing; domain-specific address overrides; suffix matching for filtering; IPv4, IPv6, and DNS64; and cached, multithreaded asynchronous I/O. Its query and service protocols include UDP, TCP, DNS over TLS, DNS over HTTPS, DNS over QUIC, and DNS over HTTP/3, with optional SOCKS5 or HTTP proxy queries. The project supports Linux, Raspberry Pi, OpenWrt, Asus router firmware, Windows Subsystem for Linux, and Windows-related deployments, and provides build scripts for LuCI, Debian, OpenWrt, and Optware packages. It is distributed under the GPLv3 license.

Domain SDK is an open-source TypeScript library by OpenCore for managing customer-owned custom domains through a single server-side API. It adds hostnames to an existing hosting platform, returns the exact routing, ownership, and certificate DNS records required by customers, tracks provider-authoritative verification and certificate status, and supports safe removal. The SDK normalizes domain lifecycle operations including adding, reading, listing, verifying, and removing domains. It provides idempotent operations, retry-aware errors, sequential polling with timeouts and cancellation, callbacks, provider backoff, and an isolated in-memory testing adapter. Adapters are provided for Vercel, Cloudflare for SaaS, Railway, Render, Netlify, and bunny.net; a subdomain client can scope tenant-chosen labels under a parent domain. It is server-side only and requires Node.js 20+ or Bun. The package is distributed under the MIT license.

Crossplane is a Kubernetes-native, CNCF project for building cloud-native control planes without writing a custom control-plane implementation. Its extensible backend orchestrates applications and infrastructure across environments through declarative APIs, while its configurable frontend lets platform teams define schemas for internal infrastructure abstractions. It manages provider-backed managed resources (MRs), composite resources (XRs), and Compositions that package collections of infrastructure resources behind simpler interfaces. Kubernetes reconciliation continuously works toward the declared state through provider APIs, and custom functions can be developed as reusable building blocks within compositions.

CoreWeave is a cloud infrastructure provider for AI, offering compute clusters that companies can obtain for AI workloads instead of using a compute marketplace.

OpenCloud is an open-source, self-hosted file-storage and collaboration platform developed by the Heinlein Group. It is descended from ownCloud Infinite Scale and rewritten in Go, providing file management and sharing for teams and organizations without requiring a separate database instance or schema migrations. The platform supports optional full-text search, browser-based document editing through an integrated office suite, access controls, two-factor authentication, encryption, and file versioning. It is available for on-premises operation or as a SaaS offering through selected partners, with a cloud-native architecture intended for large data volumes and growing teams.