diff --git a/oss-projects/README.md b/oss-projects/README.md
index ee84765..1e5ff2c 100644
--- a/oss-projects/README.md
+++ b/oss-projects/README.md
@@ -7,3 +7,7 @@
 - [IPFS - the Distributed Web](https://github.com/ipfs/ipfs)
 - [kubernetes](https://github.com/kubernetes/kubernetes)
 - [RethinkDB](https://github.com/rethinkdb/rethinkdb)
+- [Apache Kafka](https://github.com/apache/kafka)
+- [MooseFS](https://github.com/moosefs/moosefs)
+- [Mars](https://github.com/mars-project/mars)
+- [Dgraph](https://github.com/dgraph-io/dgraph)