The best open source alternative to Trigger is n8n. If that doesn't suit you, we've compiled a ranked list of other open source Trigger alternatives to help you find a suitable replacement. Other interesting open source alternatives to Trigger are: Windmill, Automatisch, and Hatchet.
Trigger alternatives are mainly Workflow Automation Tools but may also be Workflow Orchestration Tools or PaaS & Deployment Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Trigger.
A flexible automation platform combining AI capabilities with business process automation, offering both code-based and no-code options for technical teams.

n8n stands out as a versatile workflow automation platform trusted by major enterprises like Cisco, Microsoft, and Liberty Mutual. The platform offers unique flexibility with both visual and code-based automation options, making it ideal for technical teams who need precise control.
Key capabilities include:
The platform excels in various use cases from IT operations (employee onboarding, account provisioning) to Security operations (incident management) and Sales automation (customer insights). With 90k+ GitHub stars and a 4.9/5 rating on G2, n8n has proven its reliability and effectiveness in enterprise environments.
Technical teams particularly value:
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.

Windmill is a versatile, open-source workflow automation platform designed for developers who value flexibility and control. It offers a unique code-first approach, allowing you to create powerful workflows, scripts, and apps using your preferred programming languages.
Key benefits of Windmill include:
Whether you're automating DevOps tasks, creating data pipelines, or building internal tools, Windmill provides the flexibility and power you need to streamline your development processes and boost productivity.
Self-hosted automation tool that connects your apps and services, enabling powerful integrations and efficient data flow across your ecosystem.

Automatisch is a robust, open-source integration platform that revolutionizes the way you connect and automate your digital tools. By providing a self-hosted solution, it puts you in control of your data and workflows, ensuring maximum privacy and customization.
Key benefits of Automatisch include:
Whether you're a small business owner, a developer, or an enterprise IT manager, Automatisch provides the flexibility and power to create efficient, automated workflows that save time and reduce errors across your organization.
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.

Hatchet is a durable orchestration platform that helps engineering teams build and deploy mission-critical AI agents, durable workflows, and background tasks. It supports applications written in Python, Typescript, Go and Ruby, and can be used as a service through Hatchet Cloud or self-hosting (it's open-source and 100% MIT-licensed). Hatchet provides a full platform for queuing, automatic retries, real-time monitoring, alerting, and logging.
While Hatchet is particularly well-suited for:
Whether you're a small startup or a large enterprise, Hatchet provides the tools and flexibility needed to accelerate your development cycles, improve code quality, and maintain robust, scalable cloud infrastructure.