Open-source cloud software
1969 open-source libraries, tools and applications tagged cloud, ranked by how closely cloud is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
1969 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| wei/pull Pull is a GitHub App (built with Probot) that keeps GitHub forks up-to-date with their upstream repositories by automatically creating pull… | 61 | 7231 | active |
| node-formidable/formidable Formidable is a Node.js library for parsing multipart form data, especially file uploads, with fast streaming support. It can write uploads… | 76 | 7175 | active |
| Eclipse Che Eclipse Che is a Kubernetes-native platform that provides cloud development environments (workspaces) running in containers, with browser-b… | 99 | 7170 | active |
| miantiao-me/Sink Sink is a self-hosted URL shortener with link analytics that runs entirely on Cloudflare's serverless platform. It offers customizable slug… | 86 | 7148 | active |
| enricoros/big-AGI Big-AGI is an open-source AI workspace web application that lets users chat with many state-of-the-art LLM providers (OpenAI, Anthropic, Ge… | 91 | 7147 | active |
| datajuicer/data-juicer Data-Juicer is a Python library and data processing system for cleaning, deduplicating, synthesizing, and analyzing data for foundation mod… | 94 | 7132 | active |
| KubeVirt KubeVirt is a virtual machine management add-on for Kubernetes that extends the Kubernetes API with virtualization resource types (like the… | 100 | 7131 | stable |
| SpiceDB SpiceDB is an open-source, Google Zanzibar-inspired database for storing, computing, and validating fine-grained authorization data at scal… | 97 | 7124 | stable |
| Vespa Vespa is an open-source, distributed AI search platform and serving engine that combines full-text search, vector/tensor search, and machin… | 93 | 7117 | stable |
| dotnetcore/CAP CAP is a .NET library providing a lightweight event bus and a distributed transaction solution based on the Outbox pattern (local message t… | 91 | 7112 | active |
| quartznet/quartznet Quartz.NET is a full-featured, open-source enterprise job scheduler for the .NET platform, supporting cron and simple triggers, pluggable j… | 100 | 7095 | stable |
| katanemo/plano Plano is an AI-native proxy server and data plane for agentic applications, built on Envoy by its core contributors. It centralizes agent r… | 86 | 7092 | active |
| goproxy/goproxy.cn Goproxy.cn is a free, non-profit Go module proxy service hosted in China and backed by Qiniu Cloud's global CDN. It fully implements the GO… | 45 | 7081 | stable |
| agones-dev/agones Agones is an open-source Kubernetes controller and custom resource definitions (GameServers, Fleets) for hosting, running, and scaling dedi… | 94 | 7062 | stable |
| Snowplow Snowplow is a Customer Data Infrastructure platform that collects, validates, enriches, and streams event-level behavioral data from web, m… | 59 | 7034 | stable |
| fleetdm/fleet Fleet is an open-source device management (MDM) and security platform for IT and security teams, built on osquery. It provides cross-OS dev… | 96 | 7016 | stable |
| sysown/proxysql ProxySQL is a high-performance, protocol-aware SQL proxy for MySQL, MariaDB, Percona Server, and PostgreSQL that sits between applications … | 93 | 6940 | stable |
| external-secrets/external-secrets External Secrets Operator is a Kubernetes operator that synchronizes secrets from external secret management systems such as AWS Secrets Ma… | 95 | 6900 | stable |
| flexprice/flexprice Flexprice is an open-source usage-based pricing and billing platform for developers, offering real-time usage metering, credits and wallets… | 85 | 6894 | active |
| postgresml/postgresml PostgresML is a PostgreSQL extension that brings machine learning and AI inference directly into the database, with GPU acceleration and pg… | 32 | 6823 | active |
| FullStackHero .NET Starter Kit A production-grade .NET 10 starter kit template combining a modular-monolith Web API (vertical slice architecture) with two React 19 front-… | 82 | 6814 | active |
| luraproject/lura Lura is an open-source Go framework for building ultra-performant API Gateways and proxies, formerly known as the KrakenD framework. It agg… | 80 | 6803 | stable |
| Apache OpenWhisk Apache OpenWhisk is an open source distributed serverless (FaaS) cloud platform that executes functions in response to events at any scale … | 65 | 6802 | active |
| kubernetes-sigs/metrics-server Metrics Server is a scalable, efficient source of container CPU and memory resource metrics for Kubernetes built-in autoscaling pipelines. … | 93 | 6761 | stable |
| superagent-ai/superagent Superagent is an open-source SDK and platform for securing AI applications and agents, offering runtime guardrails that block prompt inject… | 73 | 6759 | active |
| uber/kraken Kraken is a P2P-powered Docker registry from Uber that distributes container images and large blobs across clusters using BitTorrent-style … | 98 | 6755 | active |
| OpenCost OpenCost is a CNCF incubating, vendor-neutral open source tool for real-time Kubernetes and cloud cost monitoring and allocation. It provid… | 96 | 6755 | active |
| GreptimeDB GreptimeDB is an open-source (Apache-2.0) observability database written in Rust that stores metrics, logs, and traces in a single columnar… | 98 | 6740 | active |
| vercel/platforms A production-ready Next.js multi-tenant application template from Vercel that demonstrates subdomain-based tenancy with custom routing, Red… | 70 | 6710 | active |
| Pig Pig is an enterprise-grade RBAC rapid development platform built on Spring Cloud, Spring Boot 4, and OAuth2 (Spring Authorization Server), … | 81 | 6690 | active |
| Hazelcast Hazelcast is a unified real-time data platform combining distributed stream processing with a fast, in-memory data store. It lets applicati… | 80 | 6622 | stable |
| hect0x7/JMComic-APK A GitHub Actions-based automation that periodically checks for updates to the JM Comic (18comic) Android APK and publishes new versions as … | 93 | 6589 | active |
| CloudFlare ImgBed CloudFlare ImgBed is an open-source, self-hosted image and file hosting application deployable on Cloudflare Pages/Workers (serverless) or … | 85 | 6571 | active |
| microsoft/call-center-ai An AI-powered call center service that lets you initiate or receive phone calls handled by an LLM-driven agent via a simple API call. Built… | 65 | 6570 | active |
| airweave-ai/airweave Airweave is an open-source context retrieval layer that connects to apps, databases, and documents and exposes their data through a single … | 10 | 6558 | active |
| Pixie Pixie is an open-source, Kubernetes-native observability platform that uses eBPF to auto-instrument applications, collecting telemetry like… | 79 | 6548 | active |
| k0sproject/k0s k0s is an open-source, all-inclusive CNCF-certified Kubernetes distribution packaged as a single binary with zero host OS dependencies beyo… | 94 | 6537 | active |
| crestalnetwork/intentkit IntentKit is an open-source, self-hosted cloud-native agent cluster that runs and manages a collaborative team of AI agents as containerize… | 76 | 6516 | active |
| apache/flink-cdc Flink CDC is a distributed streaming data integration tool built on Apache Flink that captures change data from databases like MySQL and Po… | 79 | 6482 | active |
| lxc/incus Incus is a system container, application container, and virtual machine manager that provides a public-cloud-like experience for running Li… | 96 | 6448 | stable |
| Micronaut Micronaut is a modern, JVM-based full-stack framework for building modular, easily testable applications and microservices in Java, Kotlin,… | 95 | 6437 | stable |
| cloud-hypervisor/cloud-hypervisor Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) written in Rust that runs on top of KVM or Microsoft's MSHV hypervisor. It… | 95 | 6405 | active |
| jsdelivr/jsdelivr jsDelivr is a free, production-grade public CDN for open-source files, tightly integrated with npm and GitHub, offering on-the-fly minifica… | 76 | 6401 | stable |
| Materialize Materialize is a streaming database that uses incremental computation to maintain always-fresh, strongly consistent SQL views over data fro… | 100 | 6386 | active |
| Apache Camel Apache Camel is an open-source integration framework offering 350+ connectors for databases, APIs, message brokers, and cloud services, wit… | 77 | 6371 | stable |
| canopyai/Orpheus-TTS Orpheus TTS is an open-source text-to-speech system built on a Llama-3b backbone that produces human-sounding speech with emotion control a… | 42 | 6347 | active |
| Apache KIE Apache KIE (Knowledge Is Everything) is an umbrella project for business automation technologies on the JVM, including the Drools rule engi… | 80 | 6340 | active |
| sanity-io/sanity Sanity Studio is an open-source, fully customizable headless CMS application built with React and TypeScript for rapidly configuring conten… | 93 | 6338 | active |
| Apache Hudi Apache Hudi is an open data lakehouse platform built on a high-performance open table format that brings database functionality like transa… | 96 | 6336 | stable |
| anthropics/claude-code-security-review A GitHub Action that uses Anthropic's Claude to perform AI-powered security reviews of pull requests, analyzing code diffs for vulnerabilit… | 45 | 6319 | active |
| GitHub Actions Runner GitHub Actions is a CI/CD and workflow automation platform that runs build, test, and deployment pipelines directly from GitHub repositorie… | 92 | 6310 | active |
| Rivet Rivet Actors is an open-source framework (RivetKit) providing long-running, stateful actor processes as the primitive for AI agents, collab… | 93 | 6309 | active |
| Pachyderm Pachyderm is a data-centric pipeline platform that automates data transformations with built-in data versioning and lineage tracking. It ru… | 30 | 6309 | active |
| nickscamara/open-deep-research An open-source clone of OpenAI's Deep Research, built as a Next.js web application. It uses Firecrawl's search and extract APIs to gather l… | 17 | 6291 | active |
| cmliu/WorkerVless2sub A Cloudflare Workers/Pages-based subscription generator that automatically batch-replaces and generates optimized-route VMess/VLESS/Trojan … | 69 | 6274 | active |
| Rainbond Rainbond is an open-source, application-centric container management platform built on Kubernetes that lets teams build, deploy, and operat… | 99 | 6272 | active |
| BFE BFE (Beyond Front End) is a modern layer 7 load balancer and reverse proxy written in Go, originally developed at Baidu and now a CNCF sand… | 99 | 6264 | active |
| JimmyLv/BibiGPT-v1 BibiGPT is an AI-powered web application that summarizes videos and audio from platforms like Bilibili, YouTube, TikTok, and podcasts, gene… | 54 | 6241 | active |
| eooce/node-ws A lightweight Node.js serverless proxy application implementing VLESS, Trojan, VMess, and Shadowsocks protocols without a kernel, deployabl… | 81 | 6238 | active |
| Helicone Helicone is an open-source LLM observability platform and AI gateway that logs, monitors, and analyzes LLM API requests with a one-line int… | 78 | 6224 | active |
| easy-ssh-exec (drone-ssh / ssh-action) A GitHub Action for executing remote SSH commands within CI/CD workflows, built with Go and drone-ssh. It supports password and key authent… | 77 | 6217 | active |
| lightdash/lightdash Lightdash is an open-source, agentic business intelligence platform that lets data teams define governed metrics, dashboards, AI agents, an… | 96 | 6194 | active |
| Azure/Azure-Sentinel The official community repository for Microsoft Sentinel, a cloud-native SIEM, containing out-of-the-box detections, hunting queries, workb… | 77 | 6189 | active |
| apache/pinot Apache Pinot is an open-source distributed OLAP datastore purpose-built for low-latency, high-throughput real-time analytics. It ingests da… | 82 | 6163 | stable |
| KServe KServe is a CNCF incubating, Kubernetes-native platform for serving both generative and predictive AI models at scale. It provides a standa… | 94 | 6133 | stable |
| Knative Knative is a Kubernetes-based platform providing middleware components for building, deploying, and managing serverless workloads, comprisi… | 96 | 6110 | stable |
| Weblate Weblate is a libre, web-based continuous localization platform with tight version control (Git, Mercurial) integration, built in Python/Dja… | 99 | 6109 | stable |
| baserow/baserow Baserow is an open-source, no-code platform for building databases, applications, automations, dashboards, and AI agents, positioned as an … | 98 | 6094 | active |
| google/agents-cli A Python CLI plus agent skills that equip coding assistants (Claude Code, Codex, Antigravity, etc.) to build, evaluate, and deploy AI agent… | 82 | 6094 | active |
| h2non/imaginary Imaginary is a fast HTTP microservice written in Go for high-level image processing, backed by bimg and libvips. It exposes image operation… | 42 | 6084 | stable |
| Azure/azure-sdk-for-net The official Azure SDK for .NET, containing client and management libraries for all Azure services, developed in the open. It provides cons… | 96 | 6072 | active |
| agent-infra/sandbox AIO Sandbox is an all-in-one Docker container environment for AI agents that bundles a browser (with VNC), shell terminal, filesystem, VSCo… | 78 | 6068 | active |
| alexcasalboni/aws-lambda-power-tuning AWS Lambda Power Tuning is an open-source tool built on AWS Step Functions that benchmarks Lambda functions across different memory configu… | 75 | 6068 | active |
| oomol-lab/open-connector OpenConnector is an open-source connector gateway that lets users authorize SaaS app accounts once and exposes 1,000+ providers and 10,000+… | 81 | 6046 | active |
| apache/hive Apache Hive is a distributed, fault-tolerant data warehouse system that enables reading, writing, and managing petabytes of data in distrib… | 77 | 6030 | active |
| TideDra/zotero-arxiv-daily A Python tool deployed as a GitHub Action that recommends new arXiv (and bioRxiv/medRxiv/chemRxiv) papers daily based on the contents of yo… | 79 | 6002 | active |
| amazon-science/chronos-forecasting Chronos is a Python library providing pretrained foundation models for time series forecasting, including Chronos-2 which handles univariat… | 91 | 5999 | active |
| volcano-sh/volcano Volcano is a CNCF-hosted, Kubernetes-native batch scheduling system that extends kube-scheduler for high-performance workloads like AI/ML t… | 98 | 5993 | stable |
| Outerbase Studio Outerbase Studio is a lightweight, browser-based GUI for managing SQL databases, with strong support for SQLite-family databases (SQLite, L… | 58 | 5978 | active |
| kuafuai/DevOpsGPT DevOpsGPT is a multi-agent system that combines LLMs with DevOps tools to convert natural language requirements into working software. It a… | 64 | 5963 | active |
| capcom6/android-sms-gateway An Android application that turns a smartphone into an SMS and MMS gateway, exposing a REST API for sending messages programmatically and w… | 95 | 5905 | active |
| dograh-hq/dograh Dograh is an open-source, self-hostable voice AI platform for building production voice agents, positioned as an alternative to Vapi and Re… | 85 | 5903 | active |
| Guardian DotCom (theguardian.com) The backend Scala application powering theguardian.com, built as a set of Play Framework 2 services. It fetches content from the Guardian's… | 77 | 5899 | active |
| Livebook Livebook is an open-source web application for writing interactive and collaborative Elixir notebooks, mixing Markdown prose with executabl… | 98 | 5888 | active |
| cortexproject/cortex Cortex is a horizontally scalable, highly available, multi-tenant long-term storage backend for Prometheus and OpenTelemetry metrics. It ru… | 88 | 5877 | stable |
| KurrentDB KurrentDB (formerly EventStoreDB) is an event-native database designed for event-driven architectures, storing data as immutable event stre… | 100 | 5873 | active |
| easegress-io/easegress Easegress is a cloud-native traffic orchestration system that acts as an API gateway, reverse proxy, and traffic manager with built-in Raft… | 78 | 5867 | active |
| JanusGraph JanusGraph is an open-source, distributed graph database optimized for storing and querying graphs with billions of vertices and edges acro… | 79 | 5857 | active |
| srizzon/git-city Git City is a web application that turns GitHub profiles into 3D pixel art buildings in an explorable interactive city, with building heigh… | 61 | 5849 | active |
| sqlchat/sqlchat SQL Chat is a chat-based SQL client and editor that lets users query, modify, add, and delete data using natural language, powered by OpenA… | 62 | 5847 | active |
| GPUStack GPUStack is an open-source GPU cluster manager for AI model serving that orchestrates inference engines like vLLM, SGLang, and TensorRT-LLM… | 88 | 5844 | active |
| areal-project/AReaL AReaL is a large-scale asynchronous reinforcement learning system that bridges foundation model training with agent-based applications, sup… | 86 | 5842 | active |
| vercel-labs/open-agents Open Agents is an open-source reference application and template for building cloud-hosted background coding agents on Vercel. It combines … | 58 | 5833 | active |
| pytorch/torchtitan torchtitan is a PyTorch-native platform for large-scale training of generative AI models, offering a clean-room implementation of PyTorch's… | 81 | 5830 | active |
| Klavis-AI/klavis Klavis AI is an open-source MCP (Model Context Protocol) integration platform that lets AI agents connect to 100+ prebuilt tool integration… | 59 | 5814 | active |
| snailyp/gemini-balance A Python FastAPI proxy and load-balancing service for the Google Gemini API that rotates multiple API keys and exposes both Gemini and Open… | 36 | 5813 | active |
| Dependabot Dependabot-Core is the Ruby library powering GitHub's Dependabot automated dependency updates. It resolves and updates dependencies across … | 96 | 5807 | active |
| Eventual-Inc/Daft Daft is a high-performance distributed data engine with a Python dataframe API, implemented in Rust, designed for AI and multimodal workloa… | 95 | 5804 | active |
| Kill Bill Kill Bill is an open-source subscription billing and payments platform that manages subscriptions, invoicing, payment processing, and dunni… | 94 | 5801 | stable |
| google-deepmind/gemma The official JAX-based Python library from Google DeepMind for running, sampling from, and fine-tuning the Gemma family of open-weight larg… | 85 | 5796 | active |