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SPECIFICTION
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Trow

trow.io

LinuxAPISelf-hosted
Visit trow.io
Spec score 6.6 #48 of 60 in Container Registries

Spec sheet

Product
Trow is a container registry and image cache designed to run inside Kubernetes clusters.Read 11 Oct 2026 · trow.io
Deployment
Trow runs inside a Kubernetes cluster, and the project provides a Helm chart.Read 11 Oct 2026 · github.com
Integrations
The user guide describes configuring Trow with containerd and shows Podman and curl examples for pulling images.Read 11 Oct 2026 · github.com
Security
Integration with vulnerability scanners and existing authentication and authorization solutions is listed as planned on the product site.Read 11 Oct 2026 · trow.io
License
The project repository identifies its license as Apache-2.0.Read 11 Oct 2026 · github.com
Availability
The project README describes Trow as beta and says users can expect rough edges.Read 11 Oct 2026 · github.com
Credentials
Proxy credentials can be configured per registry host and repository path prefix.Read 11 Oct 2026 · github.com
Image caching
Trow can cache external images locally in a cluster and proxy registries.Read 11 Oct 2026 · github.com
Image controls
Its validating webhook can allow or deny images based on configured prefixes.Read 11 Oct 2026 · github.com
Installation
A Helm chart is available for installing Trow.Read 11 Oct 2026 · github.com
Planned capabilities
A distributed architecture for high availability and scalability, and full auditing and authentication of image access, are listed as coming soon or planned.Read 11 Oct 2026 · github.com
Planned integrations
The official site lists vulnerability scanner integration and integration with existing authentication and authorization solutions as planned features.Read 11 Oct 2026 · trow.io
Registry API
Trow implements the OCI Distribution Specification, including API methods for listing repositories and tags.Read 11 Oct 2026 · github.com
Registry standard
Trow conforms to the OCI Distribution Specification for registries.Read 11 Oct 2026 · github.com
Self-hosted registry
Trow provides a self-hosted registry for an organization’s images.Read 11 Oct 2026 · trow.io
Storage limit
Trow stores image data in files and the architecture guide says it has no option for storage such as S3.Read 11 Oct 2026 · github.com
Target users
The README describes use cases for running a lightweight registry in Kubernetes and preventing unauthorized images from reaching the cluster.Read 11 Oct 2026 · github.com

Where Specifiction places it

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