AWS Lambda - Automatic, event-driven compute service
Fission.io - Fission.io is a serverless framework for Kubernetes that supports many concepts such as event triggers, parallel execution, and statelessness.
Nuclio - Nuclio is an open source serverless platform.
Google Cloud Run - Bringing serverless to containers
Knative - Knative provides a set of components for building modern, source-centric, and container-based applications that can run anywhere.
Spot.io - Build web, mobile and IoT applications using AWS Lambda and API Gateway, Azure Functions, Google Cloud Functions, and more.