Open-source alternatives to OpenFunction

Firecracker is a virtual machine monitor that leverages hardware-assisted virtualization to create and manage isolated execution environments. It functions as a lightweight runtime designed to launch virtual machines with minimal memory overhead and near-instantaneous startup times, providing the security of traditional hardware virtualization with the efficiency of containerized workloads. The project distinguishes itself through a security-focused architecture that enforces strict process boundaries using system-level barriers and restricted user privileges. It minimizes the attack surface

Fission is a function-as-a-service platform and serverless framework for Kubernetes. It manages the lifecycle and execution of code snippets as serverless functions, providing an orchestrator that triggers these functions based on HTTP requests, message queues, or scheduled events. The platform features a cold-start optimized runtime that utilizes warm container pools and dynamic loaders to achieve millisecond execution. It includes a native autoscaler to adjust the number of function instances based on real-time traffic demand and supports canary release testing to split incoming traffic bet

The container native, cloud agnostic serverless platform.

IronFunctions - the serverless microservices platform by

KEDA is a Kubernetes event-driven autoscaler and cloud event scaling engine. It functions as a custom metrics provider that monitors external event sources—including message brokers, databases, and cloud metrics—to dynamically adjust the replica counts of containerized workloads. The project is distinguished by its scale-to-zero workflow, which reduces workloads to zero replicas during inactivity and automatically restarts them when new events are detected. It operates as a multi-cloud event trigger system, using a pluggable scaler interface to integrate with a wide array of third-party servi

Event-driven application platform for Kubernetes

Kubernetes-based, scale-to-zero, request-driven compute

Laf is a serverless backend platform that provides an integrated environment for cloud functions, a document database, and file storage. It serves as a complete infrastructure for developing and deploying backend logic, data persistence, and real-time communication without the need for manual server management. The platform features a browser-based IDE that allows developers to write, test, and deploy serverless functions directly within a web editor, removing the requirement for local environment setup. It also includes a WebSocket communication platform for maintaining persistent bidirectio

A Function as a Service tool makes a function as a container-based service in seconds.

Nuclio is a high-performance serverless framework designed for Kubernetes that automatically executes user functions when events arrive from HTTP endpoints, message queues, or streaming data platforms. It processes hundreds of thousands of events per second per function instance through efficient parallel workers, and can allocate functions to run on either CPU or GPU hardware to match workload requirements for data processing or machine learning tasks. The platform scales function instances down to zero when idle and wakes them on demand based on incoming event load, while providing an event

OpenFaaS is a serverless function platform that provides a container-native framework for deploying and managing event-driven code. It functions as an abstraction layer over container orchestrators, allowing developers to package code into scalable functions that run across Kubernetes clusters or edge computing environments. The platform distinguishes itself through a developer-centric runtime that utilizes standardized language templates and automated build pipelines to simplify the creation of container images. It features a central API gateway that manages request routing, authentication,

Serverless Functions For Kubernetes

OpenFaaS Cloud

:fire: Serverless Devs: Serverless developer tool ( Serverless Devs: Serverless 开发者工具 )

The Serverless Framework is a declarative infrastructure-as-code tool designed to automate the deployment, scaling, and lifecycle management of cloud-native applications. It provides a unified command-line interface that translates high-level configuration files into provider-specific resource templates, enabling developers to orchestrate complex architectures, event-driven functions, and cloud resources within a single project structure. What distinguishes this framework is its focus on developer experience and multi-environment parity. It supports local function invocation and event proxyin

Tau is a unified development and operations environment designed as a DevOps coordination platform. It functions as a fullstack development workspace that synchronizes coding and infrastructure management tasks for both human users and automated machine processes. The system acts as a hybrid infrastructure orchestrator, employing modular drivers to deploy and manage software across both public cloud providers and self-hosted private servers. It provides a shared workspace that integrates command line interface operations with infrastructure deployment to unify development and operational work

Thanos is a distributed metrics query engine and monitoring scalability suite designed to provide a unified interface for aggregating data from multiple Prometheus servers and clusters. It functions as a high availability monitoring backend that eliminates single points of failure by deduplicating data from replicated instances. The system enables long-term retention by persisting time-series data to cloud-native object storage, allowing for unlimited historical archiving beyond the limits of local disks. It further optimizes this storage through a downsampling and retention manager that comp