ProcessWire is an open-source CMS released in 2010 and built on PHP, known for its flexible field model, API-driven development and template freedom, with 20+ built-in field types under the MPL 2.0 license, a common choice for developers building custom websites and business systems.
Plone is an enterprise-grade open-source CMS released in 2001, built on Python and known for fine-grained permissions, multi-level workflows and native multilingual support, adopted by governments and international organizations for security- and compliance-heavy scenarios.
Pico CMS is a lightweight open-source flat-file CMS first released in 2013, storing content as Markdown files and rendering pages with Twig templates on any PHP host with millisecond-level page loads, ideal for personal blogs, portfolios and lightweight documentation sites.
Fork CMS is an open-source lightweight PHP content management system from Belgium, first released in 2010, known for modular extensions, multilingual support, and quick deployment, suited to small and medium business websites and localized sites.
dotCMS is an open-source enterprise CMS founded in Miami, US in 2003, built on the Java stack with dual-mode traditional and headless architecture, REST/GraphQL dual APIs and multi-site management, listed as a representative vendor by Gartner.
Directus is an open-source headless CMS and backend-as-a-service platform founded in Los Angeles, US in 2014 that automatically wraps any SQL database into REST/GraphQL APIs, with 25k+ GitHub stars, ideal for data-driven projects.
Cockpit CMS is an open-source headless content management system released in 2015 under the MIT license, delivering JSON content through a REST API. It is lightweight, self-hostable and flexible for developer-driven, tech-stack-agnostic content backends.
Windmill is an open-source developer platform founded in Paris, France in 2021, built with Rust/TypeScript, that turns scripts into workflows, internal tools, and scheduled tasks, supporting both self-hosted and cloud SaaS modes.
StackStorm is an event-driven automation platform open-sourced in 2014 and hosted by the Linux Foundation, often called "IFTTT for Ops," using Sensors, Rules, Actions, and workflow orchestration for automated alert response and self-healing.
ProcessMaker is a low-code BPM and workflow automation platform founded in 2001 in Durham, USA, supporting BPMN 2.0 and serving 1,000+ enterprise customers.
GoCD is ThoughtWorks' open-source continuous delivery server, known for visual pipelines, value stream mapping, and complex deployment strategy support, focused on pipeline dependency management and deployment orchestration.
Concourse CI is a container-native open-source CI/CD system initiated by Pivotal (now Broadcom/VMware), using a resource-oriented pipeline model where each task runs in an isolated container, known for declarative YAML and reproducible builds.
Shynet is an open-source, self-hosted, privacy-friendly web analytics tool created by US developer Mike Miles, built on Django, requiring no cookies, with multi-site and real-time stats and full user data ownership.
GoAccess is an open-source real-time web log analyzer that reflects traffic in milliseconds from server logs, supports Apache/Nginx/CloudFront formats and HTML/JSON/CSV output, and is fully local, self-hosted, free, and privacy-friendly.
Countly is an open-source product analytics platform founded in 2012 in London, offering self-hosted and cloud deployment with native mobile and web analytics, crash reporting, push, and A/B testing, with 15,000+ deployments worldwide per official materials.
Cabin Analytics is a privacy-friendly, lightweight website analytics provider headquartered in the United States. It delivers core traffic metrics without cookies or IP collection, using a low-footprint Golang + SQLite architecture with one-click Docker self-hosting, making it an ideal choice for privacy-conscious site owners and small businesses.
Ackee is an open-source, self-hosted website analytics tool created in 2020 by German developer Tobias Reich, built on Node.js and MongoDB. It tracks traffic without cookies and is GDPR-compliant by default, offering a lightweight privacy-first alternative to Google Analytics.
Founded by SeMI Technologies in 2019 and headquartered in Amsterdam, Netherlands, Weaviate is a CNCF open-source vector database with native hybrid search, modular AI integration and GraphQL queries, a popular foundation for RAG apps and semantic search.
Kubeflow is a Kubernetes machine learning platform open-sourced by Google in 2017 and now a CNCF project, covering model training, tuning and serving across the full MLOps lifecycle with Pipelines, Katib and KServe.
Jina AI is an open-source AI company founded in 2020, providing Jina Embeddings, Reranker and Reader as a complete open-source infrastructure for RAG and multimodal search, with free-tier and pay-as-you-go cloud APIs.
Fireworks AI is an ultra-fast LLM inference platform founded in 2022 in California, USA. Its FireAttention kernel pushes latency for open-source models like Llama and DeepSeek to millisecond levels, with an OpenAI-compatible API.
Taiga is an open-source agile project management platform developed by the Spanish team Kaleidos, with native Scrum and Kanban support, self-hosted deployment, a free Community edition, and free basic cloud plans for individuals and small teams.
Redmine is an open-source project management and issue tracking tool created by Jean-Philippe Lang in 2006, built with Ruby on Rails under GPLv2, supporting multiple projects, Gantt charts, time tracking, and 1000+ plugins, and completely free to self-host.
OpenProject is the well-known open-source project management software from Berlin, Germany, released under GPLv3 in 2012 with 100,000+ installations, offering Gantt charts, Scrum/Kanban boards, time tracking and BIM, available self-hosted or in the cloud with a free community edition.