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1.Joda Time10,397 usages

joda-time » joda-time Apache

Joda-Time provides a quality replacement for the Java date and time classes. Note that from Java SE 8 onwards, users are asked to migrate to java.time (JSR-310) - a core part of the JDK which replaces this project.
Last Release on Apr 28, 2026

2.Jackson Datatype: JSR3109,150 usages

com.fasterxml.jackson.datatype » jackson-datatype-jsr310 Apache

Add-on module to support JSR-310 (Java 8 Date & Time API) data types.
Last Release on Apr 29, 2026

Relocated → tools.jackson.datatype » jackson-datatype-jsr310

3.Kotlinx Datetime2,863 usages

org.jetbrains.kotlinx » kotlinx-datetime-jvm Apache

Kotlin Datetime Library
Last Release on May 8, 2026

4.Kotlinx Datetime1,635 usages

org.jetbrains.kotlinx » kotlinx-datetime Apache

Kotlin Datetime Library
Last Release on May 8, 2026

5.Apache Groovy515 usages

org.apache.groovy » groovy-datetime Apache

Groovy: A powerful multi-faceted language for the JVM
Last Release on May 8, 2026

6.ThreeTen Backport831 usages

org.threeten » threetenbp BSD

Backport of JSR-310 from JDK 8 to JDK 7 and JDK 6. NOT an implementation of the JSR.
Last Release on May 9, 2026

7.Kotlinx Datetime655 usages

org.jetbrains.kotlinx » kotlinx-datetime-js Apache

Kotlin Datetime Library
Last Release on May 8, 2026

8.Scala Java Time374 usages

io.github.cquiroz » scala-java-time BSD

java.time API implementation in Scala and Scala.js
Last Release on Jun 7, 2024

9.Apache Groovy94 usages

org.apache.groovy » groovy-dateutil Apache

Groovy: A powerful multi-faceted language for the JVM
Last Release on May 8, 2026

10.Apache Groovy511 usages

org.codehaus.groovy » groovy-datetime Apache

Groovy: A powerful, dynamic language for the JVM
Last Release on May 27, 2025

Relocated → org.apache.groovy » groovy-datetime