今天上網找了許久，找到了基於pregel的幾種implementation，現列舉在此，省去檢索之力！
A quick overview of 6 Pregel-inspired frameworks(Apache Hama, GoldenOrb, Apache Giraph, Phoebus, Signal/Collect, and HipG)
So, to summarize, what Hama, GoldenOrb and Giraph have
in common is: Java platform, Apache License (and incubation), BSP computation.
What they differ for: Hama offers BSP primitives not graph processing API (so it sits at a lower level), GoldenOrb provides Pregel’s API but requires the deployment of additional software to your existing Hadoop infrastructure, Giraph provides Pregel’s API (and is kind of complete at the current state) and doesn’t require additional infrastructure.
但是，我自己對這幾種implementation重新逐個搜索了一邊，好像Giraph也要Hadoop支持的！
Giraph website：http://incubator.apache.org/giraph/
GoldenOrb website：http://goldenorbos.org/
Hama website： http://hama.apache.org/
Phoebus使用Erlang實現的， 還有一種implementation是Bagel使用Spark實現的。