Various Web Archives are
accessible via the Memento "Time Travel for the Web" protocol through a proxy solution. Because of the proxy nature of the Memento support, responses are typically slower than they would be with native Memento support.
Web Archives can be made natively Memento compliant by installing
a recent release of the
Wayback software. For example, the
Internet Archive natively supports Memento, as described
here.
Nevertheless, the proxy solution for Web Archives provides support for Memento's datetime negotiation to access a version of a web resource as
it existed at a specific moment in time.
Check out the
brief introduction to Memento if you are not familiar with it.
The below table lists Web Archives that are Memento compliant by proxy. The table also shows the abbreviation that is used in the path
of their TimeGate and TimeMap URIs, and provides a pointer to information about the archive.