diff --git a/README.md b/README.md
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@@ -150,6 +150,7 @@ A curated list of awesome Java frameworks, libraries and software. Inspired by o
 ## Data structures
 
 * [Apache Parquet](https://parquet.incubator.apache.org/) - A columnar storage format based on assembly algorithms from the Dremel paper by Google.
+* [Protobuf](https://github.com/google/protobuf) - Protocol Buffers - Google's data interchange format.
 
 ## Date and Time