Docker Hub - Docker Hub is a cloud-based registry service
Squid Proxy - Website Content Acceleration and Distribution. Thousands of web-sites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients.
Azure Container Registry - Store images for all types of container deployments and OCI artifacts, using Azure Container Registry.
CCProxy - Want to share Internet connection? Get every computer online through a single Internet connection?
Artifactory - The world’s most advanced repository manager.
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.