Jackson vs Genson

Jackson

Core part of Jackson that defines Streaming API as well as basic shared abstractions (by FasterXML)

Source Code

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Genson

Genson a fast & modular Java <> Json library (by owlike)

JSON

Source Code

owlike.github.io

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Jackson		Genson
	Project
4	Mentions	-
2,228	Stars	217
0.6%	Growth	0.0%
9.5	Activity	0.0
11 days ago	Latest Commit	over 1 year ago
Java	Language	Java
Apache License 2.0	License	-

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

Jackson

Posts with mentions or reviews of Jackson. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-10-07.

Streaming Large JSON Response in Spring.
3 projects | dev.to | 7 Oct 2022

To put things simply, this method findAllStreaming() takes an OutputStream to write the whole json response into. To write json into the stream chunk by chunk we are using JsonGenerator. JsonGenerator is provided by Jackson-Core. More detailed about how to write stream event is covered in this blog post by the author of the library.
Are .csv files a known 'anti-pattern' and/or not a modern data format?
1 project | /r/Database | 10 Jan 2022

So do XML and JSON.
Ryū: fast float-to-string conversion (Java lib, 2018 paper)
3 projects | /r/java | 7 Mar 2021

Jackson already has some improvements for string-to-number conversion over stock JDK parser (https://github.com/FasterXML/jackson-core/pull/677). Would be great if they added faster number-to-string too.
💾 Java Records 💿 with Jackson 2.12
2 projects | dev.to | 3 Mar 2021

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Genson

Posts with mentions or reviews of Genson. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning Genson yet.
Tracking mentions began in Dec 2020.

What are some alternatives?

When comparing Jackson and Genson you can also consider the following projects:

Moshi - A modern JSON library for Kotlin and Java.

Gson - A Java serialization/deserialization library to convert Java Objects into JSON and back

jsoniter - jsoniter (json-iterator) is fast and flexible JSON parser available in Java and Go

JSON-io - Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer.

Yasson - Eclipse Yasson project

YaGson - A universal types-preserving Java serialization library that can convert arbitrary Java Objects into JSON and back, with a transparent support of any kind of self-references and with a full Java 9 compatibility.

LoganSquare - Screaming fast JSON parsing and serialization library for Android.

HikariJSON - High-performance JSON parser

jsonschema2pojo - Generate Java types from JSON or JSON Schema and annotate those types for data-binding with Jackson, Gson, etc

Jackson-datatype-money - Extension module to properly support datatypes of javax.money