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 |
|---|---|---|---|
| anc95/ChatGPT-CodeReview A GitHub App and GitHub Action that automatically reviews pull requests using ChatGPT/OpenAI models, posting AI-generated review comments o… | 89 | 4466 | active |
| astriaai/headshots-starter An open-source Next.js starter kit that generates professional AI headshots from user-uploaded selfies using Astria.ai's fine-tuning and in… | 37 | 4460 | active |
| PGO (Crunchy Postgres Operator) PGO is the Crunchy Data Postgres Operator, a Kubernetes operator that declaratively manages production PostgreSQL clusters. It automates hi… | 92 | 4450 | stable |
| mosaicml/llm-foundry LLM Foundry is a PyTorch-based codebase for training, finetuning, evaluating, and deploying large language models from 125M to 70B+ paramet… | 61 | 4449 | active |
| zgsm-ai/costrict CoStrict is an open-source, enterprise-focused AI coding assistant delivered as VS Code and JetBrains extensions, offering strict-mode code… | 81 | 4444 | active |
| kubero-dev/kubero Kubero is a free, self-hosted Platform as a Service (PaaS) that lets developers deploy applications to Kubernetes without needing specializ… | 79 | 4442 | active |
| RestorePhotos A Next.js web application that restores old and blurry face photos using the GFPGAN ML model via the Replicate API. It provides a hosted se… | 32 | 4432 | active |
| MHR-CFW A Python-based MITM domain-fronting relay that routes HTTP traffic through Google Apps Script and Cloudflare Workers so network DPI filters… | 62 | 4424 | active |
| kubernetes/ingress-nginx Ingress NGINX Controller is a Kubernetes ingress controller that uses NGINX as a reverse proxy and load balancer to route external traffic … | 10 | 19446 | maintenance |
| pgbackrest/pgbackrest pgBackRest is a reliable backup and restore tool for PostgreSQL that scales to the largest databases and workloads. It supports parallel fu… | 90 | 4405 | stable |
| archestra-ai/archestra Archestra is an open-source, self-hosted enterprise AI platform combining an agentic chat UI, agent runtime, LLM gateway/proxy, MCP gateway… | 82 | 4386 | active |
| AI4Finance-Foundation/ElegantRL ElegantRL is a lightweight, modular deep reinforcement learning library built on PyTorch that implements core model-free RL algorithms (PPO… | 50 | 4368 | active |
| Cloudflare MCP Server A collection of Model Context Protocol (MCP) servers from Cloudflare that let MCP clients like Cursor or Claude manage Cloudflare services … | 81 | 4365 | active |
| kubernetes-sigs/aws-load-balancer-controller A Kubernetes controller that manages AWS Elastic Load Balancers for a cluster. It provisions Application Load Balancers for Ingress resourc… | 99 | 4343 | stable |
| Apache StreamPark Apache StreamPark is a streaming application development framework and one-stop cloud-native real-time computing platform for Apache Flink … | 72 | 4339 | stable |
| kubernetes-sigs/cluster-api Cluster API is a Kubernetes subproject providing declarative APIs and tooling for provisioning, upgrading, and operating multiple Kubernete… | 95 | 4336 | stable |
| kubernetes-sigs/agent-sandbox Agent Sandbox is a Kubernetes SIG project providing a Sandbox Custom Resource Definition (CRD) and controller for managing isolated, statef… | 86 | 4335 | active |
| camunda/camunda Camunda 8 is a process orchestration framework whose orchestration cluster includes the Zeebe cloud-native BPMN/DMN engine, plus Tasklist, … | 96 | 4327 | active |
| Fleetbase Fleetbase is an open-source, modular logistics and supply chain operating system (LSOS) providing fleet management, dispatch, route optimiz… | 95 | 4327 | active |
| 53AI Hub 53AI Hub is an open-source AI portal and knowledge base platform for publishing and operating AI agents, prompts, and AI tools. It integrat… | 84 | 4323 | active |
| open-policy-agent/gatekeeper Gatekeeper is a CNCF policy controller for Kubernetes built on Open Policy Agent (OPA). It enforces admission policies via customizable con… | 97 | 4303 | stable |
| uptrace/uptrace Uptrace is an open-source Application Performance Monitoring (APM) platform that collects and visualizes OpenTelemetry traces, metrics, and… | 92 | 4297 | active |
| deepflowio/deepflow DeepFlow is an open-source eBPF-based observability platform providing zero-code distributed tracing, metrics, request logs, and continuous… | 97 | 4294 | active |
| orioledb/orioledb OrioleDB is a cloud-native storage engine for PostgreSQL implemented as an extension using the table access method API. It offers improved … | 94 | 4258 | active |
| kubeflow/pipelines Kubeflow Pipelines is a Kubernetes-native platform for building, deploying, and orchestrating reusable end-to-end machine learning workflow… | 98 | 4248 | stable |
| SwanHubX/SwanLab SwanLab is an open-source AI training tracking and visualization platform with a Python SDK, CLI, and cloud or self-hosted dashboard. It in… | 88 | 4237 | active |
| thinking-machines-lab/tinker-cookbook Tinker Cookbook is a Python library of realistic examples and abstractions for post-training (fine-tuning) language models via the Tinker A… | 84 | 4199 | active |
| arvin341az-glitch/RVG RVG Gateway is a self-hosted multi-protocol proxy management panel built with Python and FastAPI. It provides an admin dashboard for creati… | 56 | 4196 | active |
| iterative/cml CML (Continuous Machine Learning) is an open-source CLI tool that brings CI/CD practices to machine learning projects on GitHub, GitLab, an… | 41 | 4191 | active |
| simov/grant Grant is an OAuth proxy middleware for Node.js supporting 200+ OAuth providers across OAuth 1.0a, OAuth 2.0, and OpenID Connect. It integra… | 32 | 4165 | stable |
| UsefulSoftwareCo/executor Executor is an open-source integration layer and MCP gateway for AI agents, letting you configure MCP servers, OpenAPI specs, GraphQL APIs,… | 77 | 4162 | active |
| Spark NLP Spark NLP is an open-source natural language processing library built natively on Apache Spark, providing scalable NLP annotations and tran… | 98 | 4160 | stable |
| aws/aws-sdk-pandas AWS SDK for pandas (awswrangler) is a Python library that extends pandas with high-level APIs for reading and writing data across AWS servi… | 91 | 4121 | active |
| microfeed/microfeed microfeed is an open-source, agentic, headless CMS that self-hosts on Cloudflare Workers, D1, and R2, letting users publish podcasts, blogs… | 98 | 4117 | active |
| CSGHub CSGHub is an open-source, self-hostable platform for managing the full lifecycle of LLM assets including models, datasets, spaces, and agen… | 90 | 4115 | active |
| octelium/octelium Octelium is a free, open-source, self-hosted unified zero trust secure access platform built on Kubernetes. It can operate as a remote acce… | 87 | 4107 | active |
| hunvreus/pagescms Pages CMS is an open-source, MIT-licensed CMS that lets users edit content and media directly in GitHub repositories through a friendly web… | 87 | 4096 | active |
| FedML FedML (TensorOpera) is a unified Python library for large-scale distributed training, model serving, and federated learning across GPU clou… | 41 | 4070 | active |
| varnishcache/varnish-cache Varnish Cache is a high-performance open-source HTTP accelerator and reverse caching proxy written in C, serving cached responses from memo… | 10 | 4044 | active |
| googleapis/python-genai The official Google Gen AI Python SDK for integrating Google's generative models (Gemini Developer API and Gemini Enterprise Agent Platform… | 85 | 4035 | active |
| mahdibland/V2RayAggregator A Python-based automation that aggregates free proxy nodes (Shadowsocks, SSR, Trojan, Vmess) from public sources, deduplicates them, and sp… | 68 | 4024 | active |
| getwud/wud WUD (What's up Docker?) is a self-hosted service that continuously monitors Docker containers, detects newer image versions across many reg… | 99 | 4020 | active |
| Nixtla/nixtla Nixtla's TimeGPT is a production-ready pre-trained foundation model for time series forecasting and anomaly detection, accessed via a Pytho… | 98 | 4019 | active |
| Kuma Kuma is a CNCF Sandbox, Envoy-based service mesh that provides L4-L7 connectivity, discovery, security (mTLS), observability, and traffic c… | 95 | 4015 | stable |
| Kubernetes The official Python client library for the Kubernetes API, generated from the OpenAPI spec and maintained by SIG API Machinery. It supports… | 100 | 4001 | active |
| RavenDB RavenDB is an open-source (AGPLv3) ACID NoSQL document database written in C#, featuring full-text search, vector search, time series, shar… | 92 | 4000 | stable |
| Marin Marin is an open-source Python framework and research program for training foundation models, covering the full pipeline from data curation… | 79 | 3995 | active |
| Netflix/chaosmonkey Chaos Monkey is a chaos engineering tool from Netflix that randomly terminates virtual machine instances and containers in production to te… | 23 | 17146 | maintenance |
| Lightning-AI/LitServe LitServe is a Python framework for building custom AI inference servers with full control over batching, routing, streaming, and scaling lo… | 92 | 3956 | active |
| projectcontour/contour Contour is a Kubernetes ingress controller that acts as the control plane for the Envoy proxy, deploying Envoy as a reverse proxy and load … | 95 | 3953 | active |
| shopizer-ecommerce/shopizer Shopizer is an open-source Java e-commerce platform built on Spring Boot, providing headless commerce with a REST API covering catalog, sho… | 25 | 3942 | active |
| yetone/cumora Cumora is a cross-platform team chat application where AI agents participate as first-class teammates alongside humans, with personas, memo… | 77 | 3934 | active |
| middyjs/middy Middy is a Node.js middleware engine for AWS Lambda that lets developers attach modular, reusable middlewares (before/after/onError phases)… | 93 | 3903 | stable |
| LazyAGI/LazyLLM LazyLLM is a low-code Python framework for building multi-agent LLM applications, covering prototype assembly, data feedback, and iterative… | 92 | 3888 | active |
| lyc8503/UptimeFlare UptimeFlare is a free, serverless uptime monitoring and status page solution built on Cloudflare Workers with a D1 database backend. It sup… | 73 | 3887 | active |
| unikraft/unikraft Unikraft is an open-source Unikernel Development Kit for building custom, specialized operating system kernels tailored to individual appli… | 82 | 3881 | active |
| NVlabs/VILA VILA is a family of open-source vision language models (VLMs) optimized for efficient video and multi-image understanding, spanning edge, d… | 54 | 3865 | active |
| Ballerina Ballerina is an open-source, cloud-native programming language optimized for integration, developed by WSO2, with built-in support for JSON… | 98 | 3864 | active |
| TracecatHQ/tracecat Tracecat is an open-source, AI-native security automation (SOAR) platform that combines low-code workflows, tool-calling agents, case manag… | 90 | 3844 | active |
| pipeshub-ai/pipeshub-ai PipesHub is an open-source, self-hostable AI workplace platform that unifies business data from apps like Slack, Gmail, Drive, and Notion i… | 88 | 3843 | active |
| Netflix/maestro Netflix Maestro is a general-purpose workflow orchestrator providing workflow-as-a-service for data, ML, and software pipelines. It schedul… | 68 | 3843 | active |
| canonical/cloud-init cloud-init is the industry-standard multi-distribution tool for initializing cloud instances at boot time. It detects the cloud it runs on,… | 91 | 3839 | stable |
| helidon-io/helidon Helidon is an open-source Java framework of libraries for writing cloud-native microservices, offering both a lightweight Helidon SE API an… | 98 | 3837 | active |
| midday-ai/packrun packrun.dev is a web service and MCP server that scores, compares, and ranks npm packages across 50+ categories using live metrics like dow… | 49 | 3833 | active |
| Serverless DNS Resolver A serverless, Pi-hole-style DNS-over-HTTPS and DNS-over-TLS resolver with configurable blocklists. It deploys to Cloudflare Workers, Deno D… | 58 | 3815 | active |
| tbxark/ChatGPT-Telegram-Workers A Telegram ChatGPT bot deployable on Cloudflare Workers, Vercel, or Docker with a single-file, dependency-free setup. It supports multiple … | 94 | 3805 | active |
| aws/aws-lambda-go The official AWS SDK library for writing AWS Lambda functions in Go, providing the lambda.Start handler registration, event type definition… | 94 | 3801 | stable |
| shuaiplus/nodewarden NodeWarden is a Bitwarden-compatible password manager server that runs entirely on Cloudflare Workers, using D1 for data and R2/KV for atta… | 77 | 3789 | active |
| frappe/crm Frappe CRM is a fully featured, open-source CRM application built on the Frappe Framework for managing leads, deals, contacts, and sales pi… | 92 | 3784 | active |
| apache/kylin Apache Kylin is an open-source distributed OLAP engine for big data that delivers sub-second query latency on trillions of records. It prov… | 67 | 3776 | stable |
| shobrook/adrenaline Adrenaline is an AI-powered assistant that answers technical questions about programming concepts, GitHub repositories, documentation, and … | 32 | 3741 | active |
| livestorejs/livestore LiveStore is a next-generation state management framework built on a reactive embedded SQLite database with git-inspired event-sourcing syn… | 91 | 3737 | active |
| cloudflare/workers-rs Ergonomic Rust bindings for the Cloudflare Workers runtime, letting developers write entire Workers in Rust compiled to WebAssembly. It pro… | 97 | 3720 | active |
| Kargo Kargo is a GitOps-based application lifecycle orchestration tool that automates the promotion of software artifacts through multi-stage dep… | 94 | 3697 | active |
| zappa/Zappa Zappa is a Python tool for deploying WSGI applications (Flask, Django, Pyramid, Bottle) as serverless web services on AWS Lambda and API Ga… | 87 | 3697 | active |
| memodb-io/Acontext Acontext is an open-source memory layer for AI agents that captures learnings from agent runs and stores them as human-readable Markdown sk… | 65 | 3696 | active |
| fabric8 A Java client library providing access to the full Kubernetes and OpenShift REST APIs via a fluent DSL. It includes extensions for Knative,… | 99 | 3683 | active |
| odigos-io/odigos Odigos is an open-source distributed tracing and observability platform for Kubernetes and VMs that instruments applications automatically … | 92 | 3677 | active |
| networknt/light-4j Light-4J is a fast, lightweight, cloud-native microservices framework for Java built on the Undertow HTTP core. It offers a small memory fo… | 94 | 3673 | active |
| nuxt/content Nuxt Content is an official Nuxt module that turns Markdown, YAML, CSV, and JSON files in a content/ directory into a queryable, typed data… | 100 | 3672 | active |
| PublicAffairs/openai-gemini A serverless proxy that translates OpenAI API requests into Google Gemini API calls, letting any OpenAI-only tool use Gemini's free tier. I… | 53 | 3664 | active |
| microsoft/azure-pipelines-tasks The official repository of built-in tasks for Azure Pipelines and Team Foundation Server, written in TypeScript. It provides open-source ex… | 100 | 3661 | active |
| Bicep Bicep is a declarative infrastructure-as-code language and toolchain for describing and deploying Azure resources, compiling down to ARM te… | 95 | 3658 | active |
| Terramate Terramate is an open-source Infrastructure as Code orchestration and code generation platform written in Go, designed to help Terraform, Op… | 95 | 3633 | active |
| dtinit/data-transfer-project An open-source framework providing common data models and adapter libraries that enable direct service-to-service transfer of user data bet… | 67 | 3625 | active |
| Alloy Grafana Alloy is an open source OpenTelemetry Collector distribution with built-in Prometheus pipelines that collects, processes, and expor… | 93 | 3623 | active |
| ploomber/ploomber Ploomber is a Python framework for building maintainable data pipelines from scripts and Jupyter notebooks, with iterative local developmen… | 10 | 3621 | active |
| aws/aws-lambda-rust-runtime A set of Rust crates providing a runtime for running AWS Lambda functions written in Rust, including HTTP support, extensions, and typed ev… | 97 | 3617 | active |
| ory/oathkeeper Ory Oathkeeper is a cloud native Identity & Access Proxy (IAP) and Access Control Decision API written in Go that authenticates, authorizes… | 74 | 3605 | active |
| mxschmitt/action-tmate A GitHub Action that opens an interactive tmate SSH or web shell session on a GitHub Actions runner so you can debug failing workflows live… | 81 | 3580 | active |
| GraphScope GraphScope is a unified distributed graph computing platform from Alibaba that combines graph analytics (GRAPE), interactive graph queries … | 77 | 3558 | active |
| Vision Transformer Google Research's official Jax/Flax codebase for training large-scale vision models such as Vision Transformer, SigLIP, MLP-Mixer, and LiT … | 39 | 3551 | active |
| HamishMW/portfolio A personal portfolio website built with Remix, React, Three.js, and Framer Motion, featuring 3D animated backgrounds and a cyberpunk-inspir… | 32 | 3551 | active |
| ascending-llc/jarvis-registry Jarvis Registry is an open-source, enterprise-grade MCP and A2A agent gateway and workflow orchestration platform that gives AI copilots an… | 84 | 3531 | active |
| Nextflow Nextflow is an open-source DSL and runtime for building scalable, portable, and reproducible data-driven computational pipelines, based on … | 100 | 3514 | stable |
| olahallengren/sql-server-maintenance-solution A set of T-SQL stored procedures (DatabaseBackup, DatabaseIntegrityCheck, IndexOptimize) plus SQL Agent jobs for backing up, integrity-chec… | 75 | 3490 | stable |
| borisdayma/dalle-mini DALL·E Mini is a Python library and model that generates images from a text prompt, available via pip and hosted on Hugging Face Model Hub.… | 23 | 14724 | maintenance |
| OpenTelemetry JavaScript The official OpenTelemetry JavaScript API and SDK for instrumenting Node.js and browser applications to generate distributed traces, metric… | 94 | 3487 | active |
| gardener/gardener Gardener is a Kubernetes-native system for managing the full lifecycle of homogeneous Kubernetes clusters at scale across any cloud or infr… | 95 | 3477 | active |
| JasperFx/marten Marten is a .NET library that turns PostgreSQL into a fully featured transactional document database using its JSON support, plus an ACID-c… | 95 | 3465 | active |