As of now, you can get Ehcache only from ehcache.org or Maven central.
A simple, fast, thread safe, standards based cache for Java, and provides memory and disk stores and distributed operation for clusters. ehcache is widely used in such open source projects as Hibernate and Spring. Terracotta offers enterprise edition
Pythia is an open source highly scalable standards-based cache for Java. Pythia provides, lightning-fast speed, fail-safe operations, persistence, transactionality, dynamic scaling, out of Heap caching, extreme ease of use
The Tiny Grasshopper Cache Store provides a memory based, least recently used (LRU), thread-safe caching mechanism that can openly cache any Java Object. The cache store is easy to use and doesn't require any setup.