Open source focus

Open Source Alternatives to Fermyon

19 open source WebAssembly options similar to Fermyon, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

View all alternatives to Fermyon →

Procfunc23
Developer Tools
A service written as a plain Go function, supervised by lesiw.io/proc for reliability and distribution.
Open source
Fastify12
Developer Tools
An open-source, highly efficient web framework for Node.js focused on speed and low overhead.
Open source
KubeVirt9
Cloud Computing
Container-native virtualization for Kubernetes, enabling VMs and containers to run side-by-side.
Open source · Self-hostable
YugabyteDB67
DatabaseSunnyvale, United States$266.0M
Distributed SQL database for cloud-native applications, offering high availability and horizontal scalability.
Open source · Self-hostable
Codefresh62
EnterpriseBrisbane, Australia$42.0M
Octopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.
Open source · Self-hostable
Mirantis58
Cloud InfrastructureCampbell, United States$255.0M
Mirantis provides cloud-native infrastructure and AI platforms for enterprises to manage and operate complex environments.
Open source · Self-hostable
MetalBear56
Software DevelopmentSan Francisco, United States$12.5M
Open-core company building tools for modern backend engineers to ship faster and better.
Open source · Self-hostable
Infisical51
Developer ToolsSan Francisco, United States$34.8M
Open-source platform for managing secrets and sensitive data for developers.
Open source · Self-hostable
Novu48
EnterpriseTel Aviv, Israel$6.6M
Open-source notification infrastructure for developers, empowering the community.
Open source · Self-hostable
MLflow25
MLOpsSeattle, United States
Open-source platform for managing the ML lifecycle, from experimentation to deployment.
Open source · Self-hostable
Apache Airflow20
MLOps
Open-source platform for programmatically authoring, scheduling, and monitoring data pipelines.
Open source · Self-hostable
Maige10
Open Source
Open-source infrastructure for automating natural language workflows directly on your codebase.
Open source · Self-hostable
Pulumi66
Infrastructure as CodeSeattle, United States$228.5M
Modern infrastructure as code platform enabling developers to manage cloud resources using familiar programming languages.
Open source · Self-hostable
Xata59
DatabaseSan Francisco, United States$35.0M
Open-source Postgres platform for agent scale with copy-on-write branching.
Open source · Self-hostable
CIQ59
Artificial IntelligenceReno, United States$26.0M
Sponsors of OpenWALDO, a community-driven initiative for open-source AI training data, and provider of enterprise Linux, HPC, and AI infrastructure software.
Open source
Kong50
API ManagementSan Francisco, United States$511.0M
API gateway and management platform for microservices and cloud-native applications.
Open source · Self-hostable
SereneDB49
DatabaseSan Francisco, United States$3.8M
A real-time search analytics database unifying search and analytics in a single platform.
Open source · Self-hostable
Noobaa41
EnterpriseSan Francisco, United States$5.0M
NooBaa provides an open-source, S3-compatible object storage platform for managing data across private and public clouds.
Open source · Self-hostable
MA
Macrodata Labs39
Artificial IntelligenceParis, France$4.0M
Infrastructure for the robotics data loop.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
ProcfuncA service written as a plain Go function, supervised by lesiw.io/proc for reliability and distribution.	Developer Tools	Open source	—	—	23
FastifyAn open-source, highly efficient web framework for Node.js focused on speed and low overhead.	Developer Tools	Open source	—	—	12
KubeVirtContainer-native virtualization for Kubernetes, enabling VMs and containers to run side-by-side.	Cloud Computing	Open source · Self-hostable	—	—	9
YugabyteDBDistributed SQL database for cloud-native applications, offering high availability and horizontal scalability.	Database	Open source · Self-hostable	Sunnyvale, United States	$266.0M	67
CodefreshOctopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.	Enterprise	Open source · Self-hostable	Brisbane, Australia	$42.0M	62
MirantisMirantis provides cloud-native infrastructure and AI platforms for enterprises to manage and operate complex environments.	Cloud Infrastructure	Open source · Self-hostable	Campbell, United States	$255.0M	58
MetalBearOpen-core company building tools for modern backend engineers to ship faster and better.	Software Development	Open source · Self-hostable	San Francisco, United States	$12.5M	56
InfisicalOpen-source platform for managing secrets and sensitive data for developers.	Developer Tools	Open source · Self-hostable	San Francisco, United States	$34.8M	51
NovuOpen-source notification infrastructure for developers, empowering the community.	Enterprise	Open source · Self-hostable	Tel Aviv, Israel	$6.6M	48
MLflowOpen-source platform for managing the ML lifecycle, from experimentation to deployment.	MLOps	Open source · Self-hostable	Seattle, United States	—	25
Apache AirflowOpen-source platform for programmatically authoring, scheduling, and monitoring data pipelines.	MLOps	Open source · Self-hostable	—	—	20
MaigeOpen-source infrastructure for automating natural language workflows directly on your codebase.	Open Source	Open source · Self-hostable	—	—	10
PulumiModern infrastructure as code platform enabling developers to manage cloud resources using familiar programming languages.	Infrastructure as Code	Open source · Self-hostable	Seattle, United States	$228.5M	66
XataOpen-source Postgres platform for agent scale with copy-on-write branching.	Database	Open source · Self-hostable	San Francisco, United States	$35.0M	59
CIQSponsors of OpenWALDO, a community-driven initiative for open-source AI training data, and provider of enterprise Linux, HPC, and AI infrastructure software.	Artificial Intelligence	Open source	Reno, United States	$26.0M	59
KongAPI gateway and management platform for microservices and cloud-native applications.	API Management	Open source · Self-hostable	San Francisco, United States	$511.0M	50
SereneDBA real-time search analytics database unifying search and analytics in a single platform.	Database	Open source · Self-hostable	San Francisco, United States	$3.8M	49
NoobaaNooBaa provides an open-source, S3-compatible object storage platform for managing data across private and public clouds.	Enterprise	Open source · Self-hostable	San Francisco, United States	$5.0M	41
MAMacrodata LabsInfrastructure for the robotics data loop.	Artificial Intelligence	Open source · Self-hostable	Paris, France	$4.0M	39