Recent versions of JSAMP may be available from the Maven Central Repository under the groupId.

Other options are below.

Current Version (1.3.8):
Unsigned jar file:
Other versions:
All previous releases are available from the archive at This may also contain pre-release versions.
Source code:
The source code is available on github at
The only (non-J2SE) external library which is sometimes used by JSAMP is Apache XML-RPC: xmlrpc-1.2-b1.jar. Note however that this library is not necessary for using JSAMP, it is only required if you want to use the Apache XML-RPC implementation. If you want to use the internal XML-RPC implementation instead, which is generally recommended, then no extenal libraries are required.