workflow-engine
(3)
Inngest
Inngest is a durable execution platform that gives developers reliable background jobs, workflows, and AI-agent orchestration without managing queues or infrastructure. Founded in 2021 by Tony Holdstock-Brown and Dan Farrelly, the San Francisco company combines event streams, queues, and durable step functions into SDKs for TypeScript, Python, and Go, plus AgentKit for multi-agent systems. It has raised roughly $30 million, most recently a $21M Series A led by Altimeter in 2025, and processes over 100 million executions a day for teams including SoundCloud, Resend, and Replit.
Orkes
Orkes is an enterprise workflow orchestration company built by the creators of Netflix's open-source Conductor engine. It offers a fully managed, cloud-hosted platform that lets developers build, run, and scale durable workflows across microservices, APIs, and - increasingly - AI agents, giving companies a reliable way to put long-running, event-driven, and agentic processes into production without reinventing the underlying orchestration plumbing.
Sam Seely
Sam Seely is the co-founder and CEO of Knock, a New York-based notification infrastructure company that turned the tedious plumbing of transactional email, push, SMS and in-app messages into an API and workflow engine used by Vercel, Amplitude and others. He and CTO Chris Bell, who met at Frame.io, launched Knock in 2021 and raised a $12M Series A led by Craft Ventures in February 2024, bringing total funding to $18M.