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Apache Traffic Server vs Squid: catalog facts
Apache Traffic Server	Squid
Free Apache Traffic Server is open source under Apache-2.0.	Free Free and open source under the GNU GPL; donations accepted.
Self-hosted	Windows, Linux, Self-hosted
Caches HTTP requests to reduce origin load Can act as a proxy and load balancer	Caching that reduces bandwidth use Extensive access control rules
Requires server installation and administration	Configuration is large and takes time to learn Heavier than minimal proxies for simple forwarding
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: Apache-2.0	License: GPL
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.