Object Serialization
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Support for reading and writing Ion ("binary JSON") encoded data using Jackson abstractions (streaming API, data binding, tree model)
Last Release on May 1, 2026
CBOR and JSON (de)serialization in Scala
Last Release on Nov 3, 2025
Fast, efficient Java serialization. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
Last Release on May 19, 2023

Relocated → com.esotericsoftware » kryo
Support for reading and writing AVRO-encoded data via Jackson abstractions.
Last Release on Apr 29, 2026

protobuf serialization for mutable messages
Last Release on Mar 15, 2022
Support for reading and writing protobuf-encoded data via Jackson abstractions.
Last Release on Apr 29, 2026

Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Feb 25, 2025

Camel Cbor Support
Last Release on Apr 23, 2026
Support for reading and writing Ion ("binary JSON") encoded data using Jackson abstractions (streaming API, data binding, tree model)
Last Release on Apr 28, 2026

A feature complete pickle protocol implementation (Python's builtin serialization mechanism)
Last Release on Nov 19, 2023