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 |
|---|---|---|---|
| Consul Consul is a distributed service networking platform that provides service discovery, health checking, and a service mesh. It offers a contr… | 94 | 30087 | active |
| Consul HashiCorp Consul is a distributed, highly available service networking solution providing service discovery, health checking, service mesh … | 94 | 30087 | stable |
| huggingface/smolagents smolagents is a lightweight Python library for building and running LLM‑powered agents with just a few lines of code. It provides first‑cla… | 81 | 29890 | active |
| labring/FastGPT FastGPT is an open‑source AI agent building platform that combines knowledge‑base retrieval, RAG, and visual workflow orchestration. It let… | 94 | 29869 | active |
| modular/modular Modular Platform is an open‑source stack that includes the Mojo systems programming language and the MAX framework for building, optimizing… | 90 | 29847 | active |
| Kestra Kestra is an open‑source, event‑driven orchestration and scheduling platform written in Java. It lets you define, run and monitor complex d… | 95 | 29837 | active |
| Kestra Kestra is an open-source, event-driven orchestration and scheduling platform for data, AI, and infrastructure workflows, written in Java. I… | 95 | 29837 | stable |
| simstudioai/sim Sim is an open‑source AI workspace that lets teams build, deploy, monitor and govern AI agents and workflows. It provides a visual canvas, … | 85 | 29834 | active |
| Apollo Apollo is a reliable, centralized configuration management system for microservice environments. It provides real‑time hot‑release of confi… | 90 | 29817 | active |
| Harbor Harbor is an open‑source cloud‑native container registry that adds security, identity, and management features to Docker Distribution. It p… | 99 | 29547 | stable |
| Chroma Chroma is an open‑source data infrastructure that provides fast, scalable vector and full‑text search for AI applications. It can be self‑h… | 87 | 29471 | active |
| SRS (Simple Realtime Server) SRS (Simple Realtime Server) is a high‑performance, open‑source media server written in C++. It supports a wide range of streaming protocol… | 99 | 29351 | active |
| Plausible Analytics Plausible Analytics is an open‑source, privacy‑first web analytics application built with Elixir and Phoenix. It provides a lightweight, co… | 86 | 29207 | active |
| Envoy Envoy is an open‑source, high‑performance edge and service proxy written in C++. It provides dynamic routing, load‑balancing, TLS terminati… | 95 | 29082 | active |
| Envoy Envoy is a CNCF-hosted, high-performance C++ edge, middle, and service proxy designed for cloud-native and AI-native applications. It provi… | 95 | 29082 | stable |
| grafana/loki Grafana Loki is an open‑source, horizontally‑scalable log aggregation system that stores logs as compressed chunks and indexes only metadat… | 95 | 29036 | active |
| Mastra Mastra is a TypeScript framework for building AI-powered applications and autonomous agents, with model routing across 40+ providers, graph… | 87 | 28892 | active |
| Redash Redash is an open-source, browser-based business intelligence platform for querying, visualizing, and sharing data from 35+ SQL and NoSQL d… | 86 | 28832 | active |
| mongodb/mongo MongoDB is a high‑performance, document‑oriented NoSQL database that stores JSON‑like documents. It provides a flexible schema, built‑in re… | 77 | 28650 | active |
| MLflow MLflow is an open‑source AI engineering platform that supports the full lifecycle of machine‑learning, LLM, and agent applications. It prov… | 100 | 28441 | active |
| Budibase Budibase is an open-source low-code platform for building internal tools, CRUD applications, and AI‑driven agents. It provides a visual bui… | 94 | 28331 | active |
| Budibase Budibase is an open-source low-code platform for building AI agents, internal tools, and workflow automations on top of your own databases,… | 94 | 28331 | active |
| Go kit Go kit is a Go library that provides a collection of packages and best‑practice patterns for building robust microservices. It offers tools… | 23 | 27419 | active |
| Valkey Valkey is a high‑performance, in‑memory key‑value datastore that can be used as a cache, primary database, or message broker. It is fully o… | 90 | 27352 | active |
| rethinkdb/rethinkdb RethinkDB is an open‑source, distributed NoSQL database that stores schemaless JSON documents. It provides real‑time changefeeds that push … | 52 | 27002 | active |
| Haystack Haystack is an open‑source Python framework for orchestrating LLM‑powered pipelines, agents and RAG applications. It provides modular compo… | 99 | 26720 | active |
| Haystack Haystack is an open-source Python AI orchestration framework by deepset for building production-ready LLM applications, agents, and RAG sys… | 99 | 26720 | stable |
| Typesense Search Engine Typesense is an open‑source, typo‑tolerant search engine written in C++. It provides fast full‑text, faceted, and vector search with a simp… | 85 | 26616 | active |
| Typesense Search Engine Typesense is an open-source, in-memory search engine written in C++ that provides fast, typo-tolerant full-text search with sub-50ms latenc… | 85 | 26616 | stable |
| Apache Flink Apache Flink is an open‑source distributed processing engine for stateful computations over unbounded and bounded data streams. It provides… | 77 | 26413 | active |
| Apache Flink Apache Flink is an open-source distributed stream processing framework for stateful computations over unbounded and bounded data streams, w… | 77 | 26413 | stable |
| SST SST is a framework for building and deploying modern full-stack applications on your own cloud infrastructure, with the entire app defined … | 83 | 26341 | active |
| OpenFaaS OpenFaaS is a serverless functions platform that lets developers deploy event-driven functions and microservices packaged as OCI/Docker con… | 71 | 26245 | stable |
| Dapr Dapr is a portable, open‑source runtime that abstracts common building blocks for distributed applications. It runs as a sidecar alongside … | 99 | 26136 | active |
| Apache Seata Apache Seata is an open‑source distributed transaction framework for microservices. It provides multiple transaction modes (AT, TCC, SAGA, … | 77 | 26008 | active |
| Kratos Kratos is a lightweight Go framework for building cloud‑native microservices. It provides generated HTTP/gRPC transports, composable middle… | 88 | 25972 | active |
| Kratos Kratos is a lightweight Go framework for building cloud-native microservices, offering APIs for transport (HTTP/gRPC), middleware, registry… | 88 | 25972 | active |
| authentik authentik is an open‑source identity provider and single sign‑on platform that supports SAML, OAuth2/OIDC, LDAP, RADIUS, SCIM and more. It … | 95 | 25962 | active |
| authentik authentik is an open-source Identity Provider (IdP) and Single Sign-On (SSO) platform supporting SAML, OAuth2/OIDC, LDAP, SCIM, RADIUS, and… | 95 | 25962 | active |
| Cilium Cilium is an open-source networking, security, and observability solution for Kubernetes and container workloads built on an eBPF-based dat… | 94 | 25622 | stable |
| SpacetimeDB SpacetimeDB is a reactive, serverless backend platform that combines a relational database, authentication, real‑time sync and deployment i… | 96 | 25273 | active |
| TDengine TDengine is an open‑source, high‑performance time‑series database built for industrial IoT and large‑scale sensor data. It provides built‑i… | 90 | 25149 | active |
| TDengine TDengine is an open-source, cloud-native time-series database (TSDB) written in C, purpose-built for IoT, connected vehicles, industrial Io… | 90 | 25149 | active |
| OpenList OpenList is a community‑driven fork of AList that provides a resilient file‑listing and management service. It offers a web UI, API pages a… | 87 | 25098 | active |
| Apache SkyWalking Apache SkyWalking is an open‑source Application Performance Monitoring (APM) platform designed for cloud‑native, microservice, and containe… | 88 | 24968 | active |
| Dub Dub is an open‑source platform for creating short links, tracking conversions, and running affiliate or referral programs. It provides real… | 77 | 24877 | active |
| Dub Dub is an open-source link attribution platform combining branded short links, real-time conversion analytics, and affiliate/partner progra… | 77 | 24877 | active |
| Turso Database Turso is a lightweight, SQLite‑compatible database that can run embedded on devices or as a fully managed cloud service. It adds modern fea… | 96 | 24810 | active |
| gitlabhq/gitlabhq GitLab Community Edition is a self‑hosted web application for managing Git repositories, code reviews, CI/CD pipelines, and project collabo… | 77 | 24551 | stable |
| Argo CD Argo CD is a declarative GitOps continuous delivery tool for Kubernetes that keeps Git repositories as the source of truth for desired appl… | 94 | 24341 | stable |
| semantic-release/semantic-release semantic-release is a Node.js CLI tool that fully automates version management and package publishing. It determines the next semantic vers… | 94 | 24068 | stable |
| temporalio/temporal Temporal is an open‑source durable execution platform that runs workflows and activities with built‑in fault tolerance. It provides a serve… | 100 | 23810 | active |
| timescale/timescaledb TimescaleDB is an open-source PostgreSQL extension that adds native time‑series capabilities and high‑performance analytics. It provides au… | 98 | 23629 | active |
| Saleor Saleor is a high‑performance, composable headless commerce platform built with Python. It provides a GraphQL‑only API for managing products… | 93 | 23379 | active |
| every-app/open-seo OpenSEO is an open‑source SEO platform that provides keyword research, rank tracking, backlink analysis, site audits and AI visibility tool… | 82 | 23344 | active |
| Jaeger Jaeger is an open‑source, CNCF‑graduated distributed tracing platform for monitoring and troubleshooting complex microservice architectures… | 99 | 23310 | active |
| Skyvern-AI/skyvern Skyvern is an open‑source platform that adds AI and computer‑vision capabilities to Playwright for automating browser‑based workflows. It p… | 89 | 23226 | active |
| pgvector pgvector is an open-source PostgreSQL extension that adds vector data types and vector similarity search, supporting exact and approximate … | 76 | 23171 | active |
| GoogleContainerTools/distroless Distroless provides a collection of language‑focused Docker base images that contain only the application and its runtime dependencies. The… | 77 | 23135 | active |
| Neon Serverless Postgres Neon is an open-source serverless PostgreSQL platform that separates storage and compute for autoscaling and instant branching. It can be r… | 71 | 23123 | active |
| Neon Serverless Postgres Neon is an open-source serverless Postgres platform that separates storage from compute by replacing PostgreSQL's storage layer with a dist… | 71 | 23123 | active |
| Pangolin Pangolin is an open‑source SASE platform that unifies a WireGuard‑based VPN, zero‑trust reverse proxy, privileged access management, and an… | 85 | 23082 | active |
| n8n-mcp n8n-MCP is a Model Context Protocol server that exposes n8n node documentation, properties, and operations via an API for AI assistants. It… | 81 | 23055 | active |
| Apache RocketMQ Apache RocketMQ is a distributed, cloud‑native messaging and streaming platform that provides low‑latency, high‑throughput communication. I… | 88 | 22629 | active |
| ThingsBoard ThingsBoard is an open‑source IoT platform that provides device provisioning, data collection, processing, and real‑time visualization. It … | 98 | 22494 | active |
| ThingsBoard ThingsBoard is an open-source IoT platform for device management, telemetry data collection, processing, and visualization. It supports sta… | 98 | 22494 | stable |
| postgres/postgres PostgreSQL is an advanced open‑source object‑relational database management system. It provides ACID compliance, extensibility, and a rich … | 77 | 22443 | stable |
| openobserve/openobserve OpenObserve is an open‑source, cloud‑native observability platform that unifies logs, metrics, traces, RUM and LLM monitoring. It runs as a… | 94 | 22311 | active |
| Airbyte Airbyte is an open-source data integration platform that enables ELT pipelines and real-time data access for AI agents. It provides a catal… | 77 | 22234 | active |
| Airbyte Airbyte is an open-source data movement platform providing 600+ connectors for replicating data from APIs, databases, and files into wareho… | 77 | 22234 | active |
| QwikDev/qwik Qwik is a modern web framework that enables instant‑loading applications by deferring JavaScript execution until user interaction. It uses … | 93 | 22068 | active |
| Matomo Matomo is an open-source web analytics platform that you install on your own server. It provides real‑time visitor tracking, dashboards, an… | 98 | 21922 | active |
| recommenders-team/recommenders A Python library and collection of Jupyter notebooks with best practices for building, evaluating, and operationalizing recommendation syst… | 66 | 21919 | active |
| jina-ai/serve Jina-serve is a Python framework for building and deploying multimodal AI services that communicate via gRPC, HTTP, and WebSockets. It prov… | 36 | 21854 | active |
| teableio/teable Teable is an AI‑powered spreadsheet platform that stores data in real PostgreSQL while providing no‑code app building and AI agents. It can… | 93 | 21847 | active |
| Dgraph Dgraph is a horizontally scalable, distributed graph database that offers a native GraphQL API and ACID transactions. It is designed for re… | 97 | 21804 | active |
| Dgraph Dgraph is a distributed, horizontally scalable graph database with native GraphQL support, written in Go. It provides ACID transactions, co… | 97 | 21804 | stable |
| oracle/graal GraalVM is a high‑performance polyglot virtual machine that can compile Java (and other languages) ahead‑of‑time into native executables. I… | 66 | 21715 | active |
| livekit/livekit LiveKit is an open‑source, Go‑based server that provides a scalable WebRTC SFU for low‑latency audio, video, and data streams. It powers re… | 100 | 21700 | active |
| Vitess Vitess is a cloud‑native, horizontally‑scalable database clustering system built around MySQL. It provides transparent sharding, resharding… | 98 | 21365 | active |
| Vitess Vitess is a cloud-native database clustering system that horizontally scales MySQL through transparent, generalized sharding. It provides q… | 98 | 21365 | stable |
| google/skills A repository of ready‑to‑install Agent Skills that enable AI agents to interact with Google Cloud products and services. Skills are install… | 60 | 21305 | active |
| GoogleCloudPlatform/microservices-demo Online Boutique is a cloud-first microservices demo application: a web-based e-commerce app composed of 11 polyglot microservices communica… | 89 | 21055 | active |
| Teleport Teleport is a self‑hosted identity‑aware access proxy that provides secure, short‑lived certificate authentication for SSH, Kubernetes, dat… | 88 | 20995 | active |
| Apache ShardingSphere Apache ShardingSphere is an open‑source distributed database ecosystem that provides sharding, read/write splitting, encryption, and distri… | 77 | 20808 | active |
| Apache ShardingSphere Apache ShardingSphere is an enterprise distributed database ecosystem that turns heterogeneous databases (MySQL, PostgreSQL, etc.) into a d… | 77 | 20808 | stable |
| kortix-ai/suna Kortix is an open-source AI operating system that lets teams build, run, and govern AI agents from a single git‑based repository. It provid… | 86 | 20288 | active |
| DB-GPT DB-GPT is an open‑source agentic AI data assistant that connects to databases, files and knowledge bases, then generates SQL, code and visu… | 91 | 20127 | active |
| dnshe/DNSHE-FreeDomains DNSHE Free Domains is a non‑profit service that offers free subdomain registration with Anycast DNS and a REST API for automated management… | 59 | 19567 | active |
| DocuSeal DocuSeal is an open-source, self-hostable web application for creating, filling, and electronically signing PDF documents, positioned as a … | 91 | 18697 | active |
| Keploy Keploy is an open‑source, code‑less testing platform that records real API traffic and database interactions to generate automated integrat… | 96 | 18641 | active |
| Keploy Keploy is a developer-centric API and integration testing platform that records real application traffic, database queries, and streaming e… | 96 | 18641 | active |
| meta-llama/llama-cookbook The Llama Cookbook is a collection of Jupyter notebooks and scripts that demonstrate how to use Meta's Llama models for inference, fine‑tun… | 54 | 18559 | active |
| NVIDIA-NeMo/Speech NVIDIA NeMo Speech is an open‑source Python toolkit for building, training, and deploying speech AI models such as automatic speech recogni… | 95 | 18521 | active |
| labring/sealos Sealos is an AI-native cloud operating system built on Kubernetes that lets developers deploy applications from a GitHub repo, Docker image… | 82 | 18372 | active |
| WrenAI WrenAI is an open-source generative BI (GenBI) engine that turns natural-language questions into governed SQL, charts, and dashboards acros… | 87 | 17826 | active |
| redwoodjs/graphql RedwoodJS GraphQL is the GraphQL-focused full-stack web framework from the Redwood project, integrating React, Apollo, Prisma, and GraphQL … | 75 | 17596 | active |
| ory/hydra Ory Hydra is an OpenID Certified OAuth 2.0 and OpenID Connect provider server written in Go, handling token issuance, client management, an… | 72 | 17563 | stable |
| questdb/questdb QuestDB is an open-source, high-performance time-series database with a column-oriented, SIMD-vectorized SQL engine written in zero-GC Java… | 97 | 17440 | stable |
| Neo4j Neo4j is the leading open-source native graph database, storing and querying connected data as nodes and relationships using the Cypher que… | 66 | 17253 | stable |