A proxy is a go-between that will perform some activity for you, usually with some added benefits (or not). Besides SOCKS (which is the most generic kind of proxy), there are a lot of variants out there, and some of them will eventually find their ways here.
- Ophelia seems to have vanished (3ui.com along with it)
Also known as "optimizers". These break the Eleventh Commandment and are usually to be avoided, but they have their uses:
Content Rewrite Pseudo-Proxies
These are technically not real proxies, but rather server-side scripts typically used to simplify web content for mobile phones: