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 |
|---|---|---|---|
| Apache APISIX Apache APISIX is a dynamic, high-performance cloud-native API gateway and AI gateway built on NGINX and etcd, offering load balancing, dyna… | 94 | 17201 | stable |
| TigerBeetle TigerBeetle is a purpose-built financial transactions database written in Zig, designed for mission-critical safety and performance in onli… | 90 | 17185 | active |
| Coder code-server is an open‑source server that runs Visual Studio Code in a web browser. It enables self‑hosted, cloud‑based development environ… | 95 | 17074 | active |
| kubesphere/kubesphere KubeSphere is an open-source container platform built on Kubernetes that provides a web console for managing multi-cloud, datacenter, and e… | 72 | 17058 | active |
| argoproj/argo-workflows Argo Workflows is an open-source, container-native workflow engine for orchestrating parallel jobs on Kubernetes, implemented as a Kubernet… | 93 | 17024 | stable |
| Nomad HashiCorp Nomad is a flexible, single-binary workload orchestrator that deploys and manages containers, non-containerized applications, bat… | 94 | 17012 | stable |
| TiKV TiKV is an open-source, distributed, transactional key-value database written in Rust, using the Raft consensus algorithm and RocksDB for s… | 97 | 16890 | stable |
| Elysia Weaviate is an open-source, cloud-native vector database written in Go that stores both objects and vector embeddings, combining vector sim… | 94 | 16860 | stable |
| EMQX EMQX is a highly scalable MQTT broker and messaging platform written in Erlang, supporting MQTT 5.0/3.1.1/3.1 plus MQTT-SN, CoAP, LwM2M, an… | 98 | 16789 | stable |
| Presto Presto is a distributed SQL query engine for running interactive queries against large datasets across heterogeneous data sources such as H… | 97 | 16757 | stable |
| Trigger.dev Trigger.dev is an open-source TypeScript platform for building and deploying durable background jobs, long-running AI workflows, and AI age… | 94 | 16478 | active |
| yonggekkk/Cloudflare-vless-trojan A set of Cloudflare Workers/Pages proxy scripts supporting Vless-ws(tls) and Trojan-ws(tls) nodes, plus a local Socks5/HTTP proxy script wi… | 62 | 16415 | active |
| dagster-io/dagster Dagster is an open-source Python data orchestration platform for developing, producing, and observing data assets, with integrated lineage,… | 95 | 16287 | active |
| byJoey/cfnew A Cloudflare Workers application that deploys VLESS/Trojan/xhttp proxy nodes with optimized IP selection, generating subscription configs f… | 84 | 16114 | active |
| GoReleaser GoReleaser is a release engineering CLI tool that builds, packages, signs, and publishes software releases across many languages (Go, Rust,… | 99 | 16099 | stable |
| Apache Doris Apache Doris is an open-source MPP-based real-time analytical database that delivers sub-second queries over massive datasets, combining a … | 98 | 16078 | stable |
| budtmo/docker-android Docker-Android is a Docker image that runs Android emulators with configurable device profiles, noVNC screen viewing, log sharing, and vide… | 97 | 15950 | active |
| Quarkus Quarkus is a cloud-native Java framework optimized for containers and Kubernetes, offering fast startup, low memory footprint, and GraalVM … | 94 | 15944 | stable |
| kubeflow/kubeflow Kubeflow is a CNCF-graduated, Kubernetes-native toolkit for building AI/ML platforms, comprising subprojects like Pipelines, Notebooks, Tra… | 78 | 15915 | stable |
| scylladb/scylladb ScyllaDB is an open-source, high-performance NoSQL wide-column data store built in C++ on the shared-nothing Seastar framework. It is API-c… | 76 | 15784 | stable |
| apache/hadoop Apache Hadoop is an open-source framework for reliable, scalable distributed storage (HDFS) and processing (MapReduce, YARN) of large data … | 77 | 15694 | stable |
| Unstructured Unstructured is an open-source ETL library and platform for converting complex documents (PDF, DOCX, HTML, images, and 65+ file types) into… | 95 | 15556 | active |
| OpenMetadata OpenMetadata is an open-source metadata management platform that unifies data cataloging, lineage, data quality, governance, and business s… | 95 | 15506 | active |
| ZITADEL ZITADEL is an open-source identity and access management (IAM) platform providing authentication and authorization out of the box, includin… | 94 | 15193 | active |
| DaoCloud/public-image-mirror A public container image mirror service by DaoCloud that accelerates pulling images from foreign registries like gcr.io, ghcr.io, quay.io, … | 77 | 15186 | active |
| midday-ai/midday Midday is an open-source, all-in-one business management application for freelancers, contractors, and solo entrepreneurs, offering invoici… | 74 | 15028 | active |
| Botpress Botpress is an open-source platform and hub for building, deploying, and managing GPT/LLM-powered chatbots and AI agents, with a visual stu… | 67 | 14946 | active |
| maillab/cloud-mail Cloud Mail is a self-hosted email service built on Cloudflare Workers that lets you create and manage multiple mailboxes using just a domai… | 85 | 14862 | active |
| Logto Logto is an open-source identity and access management (IAM) infrastructure for SaaS and AI applications, built on OIDC, OAuth 2.1, and SAM… | 100 | 14728 | active |
| bytebase/bytebase Bytebase is an open-source database governance platform that acts as a control plane between users (humans and AI agents) and databases, co… | 99 | 14606 | active |
| Apache DolphinScheduler Apache DolphinScheduler is a modern data orchestration platform for building high-performance workflows with low-code drag-and-drop tooling… | 92 | 14510 | stable |
| Jib Jib builds optimized Docker and OCI container images for Java applications without requiring a Docker daemon, available as Maven and Gradle… | 88 | 14454 | stable |
| E2B E2B is a platform that provides isolated, on‑demand Linux sandboxes for AI agents to safely execute code, process data, and run tools. It o… | 94 | 14303 | active |
| vercel/commerce Next.js Commerce is a high-performance, server-rendered ecommerce storefront template built on the Next.js App Router with React Server Com… | 63 | 14285 | active |
| ArangoDB ArangoDB is a native multi-model database server written in C++ that unifies graph, document (JSON), key-value, full-text, and vector searc… | 77 | 14283 | stable |
| thanos-io/thanos Thanos is a set of composable components that turn existing Prometheus deployments into a highly available metrics system with unlimited lo… | 94 | 14226 | stable |
| Gel Gel is an open-source graph-relational database built on top of Postgres, combining a strict object-type schema, the EdgeQL query language,… | 55 | 14176 | active |
| cert-manager cert-manager is a Kubernetes controller that adds Certificate and Issuer resource types to clusters and automates obtaining, renewing, and … | 98 | 14111 | stable |
| apache/druid Apache Druid is a high-performance, distributed, real-time analytics database written in Java for fast OLAP-style slice-and-dice queries on… | 95 | 14089 | stable |
| Netflix/zuul Zuul is Netflix's L7 application gateway service providing dynamic routing, monitoring, resiliency, and security for microservices. It is a… | 93 | 14083 | active |
| Dask Dask is a flexible parallel and distributed computing library for Python that scales pandas, NumPy, scikit-learn, and other PyData tools to… | 96 | 13934 | stable |
| RabbitMQ RabbitMQ is an open source, multi-protocol messaging and streaming broker supporting AMQP 0-9-1, AMQP 1.0, MQTT, STOMP, and its Streams pro… | 98 | 13928 | stable |
| ory/kratos Ory Kratos is a headless, API-first identity and user management server written in Go that centralizes login, registration, account recover… | 72 | 13888 | stable |
| Unleash Unleash is an open-source feature management platform for controlling feature flag rollouts across applications via a server and 25+ client… | 97 | 13860 | stable |
| browserless/browserless Browserless is a platform for deploying and managing headless browsers (Chrome, Firefox, WebKit) in Docker, usable self-hosted or via their… | 98 | 13791 | active |
| emdash-cms/emdash EmDash is a full-stack, type-safe CMS built on Astro and TypeScript, positioned as a modern successor to WordPress. It runs on Cloudflare W… | 79 | 13752 | active |
| BPB Panel A self-hosted GUI panel deployed on Cloudflare Workers/Pages that generates VLESS, Trojan, and Warp proxy configurations with a private DoH… | 83 | 13647 | active |
| trinodb/trino Trino is a fast, distributed ANSI SQL query engine for big data analytics, formerly known as PrestoSQL. It queries data in place across div… | 95 | 13345 | stable |
| Debezium Debezium is an open source distributed platform for change data capture (CDC) that streams row-level database changes as events, most commo… | 77 | 13237 | stable |
| tandpfun/skill-icons A service and icon set that renders consistent SVG skill icons for GitHub READMEs and resumes via a simple URL API (skillicons.dev). It sup… | 60 | 13195 | active |
| InsForge/InsForge InsForge is an open-source, all-in-one backend platform (BaaS) designed for AI coding agents, bundling Postgres, auth, storage, realtime, e… | 86 | 13129 | active |
| rybbit-io/rybbit Rybbit is an open-source, privacy-friendly web and product analytics platform that serves as a cookieless alternative to Google Analytics. … | 87 | 13089 | active |
| Portkey AI Gateway Portkey AI Gateway is an open-source, TypeScript-based AI gateway that routes requests to 1,600+ LLMs across many providers through a singl… | 71 | 13079 | active |
| hydra-db/hydradb HydraDB is an object-store-native distributed graph database written in Rust, using S3-compatible storage as the durable source of truth wi… | 69 | 13045 | active |
| openreplay/openreplay OpenReplay is an open-source, self-hostable session replay and product analytics suite for web and mobile apps. It captures user sessions a… | 85 | 12892 | active |
| datahub-project/datahub DataHub is an open-source data catalog and metadata platform providing data discovery, governance, lineage, and observability across an org… | 99 | 12852 | active |
| Citus Citus is an open-source PostgreSQL extension (written in C) that transforms Postgres into a distributed database by sharding tables across … | 95 | 12803 | active |
| Vision Transformer Google Research's official JAX/Flax implementation of Vision Transformer (ViT) and MLP-Mixer architectures, with released pretrained checkp… | 76 | 12744 | stable |
| google/oss-fuzz OSS-Fuzz is Google's free continuous fuzzing service for open source software, combining fuzzing engines like libFuzzer, AFL++, and Honggfu… | 77 | 12743 | active |
| NangoHQ/nango Nango is an open-source integration platform for building product integrations with 900+ pre-built API providers. It handles OAuth/API-key … | 95 | 12694 | active |
| axolotl-ai-cloud/axolotl Axolotl is a free, open-source, config-driven framework for fine-tuning large language models, supporting SFT, preference learning (DPO/KTO… | 98 | 12591 | active |
| zilliztech/claude-context Claude Context is an MCP plugin that adds semantic code search to Claude Code and other AI coding agents, indexing an entire codebase into … | 57 | 12587 | active |
| redpanda-data/redpanda Redpanda is a Kafka API-compatible streaming data platform written in C++ on the Seastar framework, with no ZooKeeper or JVM dependency. It… | 88 | 12571 | stable |
| Infracost Infracost is a cloud cost intelligence tool that estimates monthly costs and flags FinOps best practices for Terraform, Terragrunt, CloudFo… | 90 | 12565 | active |
| BentoML OpenLLM is a Python framework and CLI for self-hosting open-source large language models (Llama, DeepSeek, Qwen, Mistral, etc.) as OpenAI-c… | 76 | 12552 | active |
| Encore Encore is an open-source infrastructure SDK and backend framework for TypeScript and Go that lets developers declare resources like databas… | 95 | 12446 | active |
| keephq/keep Keep is an open-source AIOps and alert management platform that consolidates alerts from 90+ monitoring tools into a single pane of glass w… | 92 | 12417 | active |
| ubicloud/ubicloud Ubicloud is an open-source IaaS cloud platform that provides elastic compute (VMs), block storage, networking, load balancing, managed Post… | 76 | 12316 | active |
| StarRocks StarRocks is a high-performance distributed OLAP database and query engine built on an MPP architecture with a fully vectorized execution e… | 94 | 12174 | active |
| stackryze/FreeDomains Stackryze Domains is a free managed subdomain service that lets developers, students, and open-source projects claim subdomains under sever… | 59 | 12173 | active |
| jina-ai/reader Jina AI Reader converts any URL into LLM-friendly markdown via the r.jina.ai prefix, and searches the web into markdown via s.jina.ai. It r… | 59 | 12158 | active |
| Crossplane Crossplane is a CNCF framework for building cloud native control planes on top of Kubernetes without writing code. It lets platform teams d… | 94 | 12137 | stable |
| LMCache/LMCache LMCache is a KV cache management layer for LLM inference that stores, compresses, and reuses KV caches across requests, sessions, and servi… | 88 | 12133 | active |
| dreamhunter2333/cloudflare_temp_email A self-hosted temporary/disposable email service built entirely on Cloudflare's free tier (Workers, Pages, Email Routing). It provides a mo… | 94 | 11944 | active |
| NVIDIA/cosmos NVIDIA Cosmos is an open platform of omnimodal world foundation models, datasets, and tools for building Physical AI systems such as robots… | 69 | 11892 | active |
| notionnext-org/NotionNext NotionNext is an open-source website builder that turns a Notion workspace into a fast, customizable standalone site using Next.js and the … | 95 | 11848 | active |
| Pyroscope Grafana Pyroscope is an open-source continuous profiling platform and database that aggregates, stores, and queries profiling data (CPU, me… | 99 | 11699 | active |
| quickwit-oss/quickwit Quickwit is an open-source, cloud-native search engine written in Rust and powered by Tantivy, designed to run sub-second search and analyt… | 93 | 11676 | active |
| is-a.dev is-a.dev is a free community service that gives developers their own .is-a.dev subdomain for personal websites and projects. Registration h… | 77 | 11574 | active |
| cloudflare/cloudflare-os Cloudflare OS is an open-source AI productivity environment built on Cloudflare Workers, providing an agent chat UI, sandboxed app ('gadget… | 60 | 11445 | active |
| Weights & Biases Weights & Biases (wandb) is a Python SDK and platform for tracking, visualizing, and managing machine learning experiments, including metri… | 100 | 11303 | active |
| BrasilAPI/BrasilAPI BrasilAPI is a free public REST API that centralizes Brazilian public data (CEP postal codes, and other government-adjacent data) behind mo… | 76 | 11259 | active |
| dexidp/dex Dex is a federated OpenID Connect (OIDC) and OAuth 2.0 identity provider that issues signed ID tokens (JWTs) for applications. It acts as a… | 94 | 11183 | stable |
| hashicorp/terraform-provider-aws The official Terraform provider plugin for Amazon Web Services, written in Go and maintained by HashiCorp. It enables Terraform to define, … | 95 | 11115 | stable |
| Triton Inference Server NVIDIA Triton Inference Server is an open-source inference serving software that deploys AI models from multiple frameworks (TensorRT, PyTo… | 98 | 11075 | stable |
| quay/clair Clair is an open-source service for static analysis of vulnerabilities in container images (OCI and Docker). It indexes image contents via … | 71 | 11065 | active |
| aws/chalice AWS Chalice is a Python serverless microframework for building and deploying applications on AWS Lambda. It provides a CLI for scaffolding … | 77 | 11056 | stable |
| langchain-ai/open-swe Open SWE is an open-source framework from LangChain for building an organization's internal asynchronous coding agent, built on LangGraph a… | 87 | 11049 | active |
| SonarQube SonarQube is a continuous code inspection platform that performs static analysis to track code quality, security vulnerabilities, and techn… | 96 | 11035 | stable |
| AutoMQ/automq AutoMQ is a cloud-native, 100% Apache Kafka-compatible streaming platform that replaces broker-local disks with S3-compatible object storag… | 94 | 10909 | active |
| dotnet/orleans Microsoft Orleans is a cross-platform .NET framework for building robust, scalable distributed applications using the Virtual Actor Model. … | 99 | 10906 | stable |
| OpenPipe/ART ART (Agent Reinforcement Trainer) is an open-source Python framework for training multi-step LLM agents using reinforcement learning techni… | 85 | 10813 | active |
| VoltAgent/voltagent VoltAgent is an open-source TypeScript framework for building production-ready AI agents with memory, tools, RAG, guardrails, MCP, voice, a… | 82 | 10773 | active |
| cdnjs cdnjs is a free, open-source content delivery network (CDN) hosting thousands of JavaScript, CSS, font, and other web library assets, power… | 74 | 10743 | stable |
| SkyPilot SkyPilot is an open-source AI compute platform that unifies fragmented infrastructure (Kubernetes, Slurm, VMs, 20+ clouds) into a single po… | 100 | 10724 | active |
| Lago Lago is an open-source metering and usage-based billing platform that ingests usage events, manages subscriptions and pricing, and generate… | 95 | 10699 | active |
| KEDA KEDA is a Kubernetes-based event-driven autoscaler that scales any container workload based on the number of events needing processing, usi… | 94 | 10643 | stable |
| yugabyte/yugabyte-db YugabyteDB is an open-source, PostgreSQL-compatible distributed SQL database built for cloud-native, mission-critical OLTP applications. It… | 95 | 10613 | stable |
| a16z-infra/ai-town AI Town is a deployable starter kit for building a virtual town where AI characters live, chat, and socialize, inspired by the Generative A… | 70 | 10589 | active |
| Activiti Activiti is a lightweight, open-source Business Process Management (BPM) platform whose core is a fast BPMN 2.0 process engine for Java. It… | 92 | 10543 | active |