High Availability GitHub Repositories (2026) · Open Source Tools

The most popular Kubernetes Operator for PostgreSQL.

The ultimate datacenter management solution for Proxmox VE and XCP-NG. Unified multi-cluster control, intelligent load balancing, and seamless cross-cluster VM migrations — all in one beautiful interface.

Orchestrate everything, everywhere. The open-source control plane for workflows across data, infrastructure, business processes and AI agents. Declarative YAML, event-driven, any language, Git-versioned, scalable to millions of executions.

Vitess for Postgres

StackGres Operator, Full Stack PostgreSQL on Kubernetes // !! Mirror repository of https://gitlab.com/ongresinc/stackgres, only accept Merge Requests there.

AIStore: scalable storage for AI applications

Cluster API Provider Hetzner :rocket: The best way to manage Kubernetes clusters on Hetzner, fully declarative, Kubernetes-native and with self-healing capabilities

Production-ready C++ Asynchronous Framework with rich functionality

The lightweight, fault-tolerant database built on SQLite. Designed to keep your data highly available with minimal effort.

Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.

Modern circuit breaker for Ruby & Rails. Thread-safe, fiber-ready async support. Built-in fallbacks, rich introspection, clean DSL. Memory-efficient with jitter & monitoring.

Highly available elephant herd: HA PostgreSQL cluster using Docker

An aggregating proxy to enable HA prometheus

High Performance Software-Defined Block Storage for container, cloud and virtualisation. Fully integrated with Docker, Kubernetes, Openstack, Proxmox etc.

NCache: Highly Scalable Distributed Cache for .NET

LudicrousDB is an advanced database interface for WordPress that supports replication, failover, load balancing, & partitioning

LeilFS is a free-and open source, distributed POSIX file system inspired by Google File System.

A privacy-focused AI chat platform built with Vite + Capacitor + Cloudflare. Runs locally or in the cloud, supports Gemini models, live web search, and intelligent key rotation. No sign-up required — fast, secure, and customizable.

A small self-hosted web UI to manage an HAProxy configuration, obtain Let's Encrypt certificates, and run an active-passive cluster with Keepalived on a shared virtual IP