Navigation

About ICU
· ICU Home
· Download ICU
Demos & Tools
· ICU4C Demos
· ICU4J Demos
· Data Customizer
Documents
· User Guide
· ICU FAQ
· ICU4J FAQ
· Docs & Papers
API References
Official Release
· ICU4C (49.1.1)
· ICU4J (49.1)
Latest Milestone
· N/A
Data & Charts
· Conversion Tables
· Feature Comparisons
· Performance & Size
Development
· Project Information
· Design Docs
· Source Repository
· Processes
· Members-Only Area
Bugs & Contacts
· Bugs
· Feature Requests
· Mailing Lists
· Feedback
Sitemap

Downloading ICU

Official Releases

If you want to use ICU (as opposed to developing it), it is recommended that you download an official packaged version of the ICU source code. These versions are tested more thoroughly than day-to-day development builds of the system, and they are packaged in zip and tar files for convenient download. Here are several recent releases of ICU that are available:

Release ICU4C ICU4J Major Changes
ICU 49 49.1.1 49.1 CLDR 21.0.1, Unicode 6.1, simpler ICU4C build without generated platform.h, many small API additions

    Note: We have changed the ICU release version numbering, combining the former first two fields into one, thus the major release sequence is ICU 4.8, ICU 49, ICU 50, …
ICU 4.8 4.8.1.1 4.8.1.1 CLDR 2.0, MessageFormat rewrite, collation script reordering
ICU 4.6 4.6.1 4.6.1.1 CLDR 1.9, Unicode 6.0, UTS #46 support, collation enhancements, alternate number symbols
ICU 4.4 4.4.2 4.4.2.2 CLDR 1.8, Unicode 5.2, compact resource bundle, Java 5 syntax
ICU 4.2 4.2.1 4.2.1.1 CLDR 1.7 update, Number system
ICU 4.0 4.0.1 4.0.1.1 CLDR 1.6 update, Unicode 5.1 update, ICU4J charset
ICU 3.8 3.8.1 3.8.1 CLDR 1.5 update, additional calendars, improved time zone support, improved charset conversion performance.
ICU 3.6 3.6 3.6.1 Unicode 5.0 update, UCA 5.0 update, CLDR 1.4 update, ICU4C charset detection, improved ICU4C break iterator
ICU 3.4 3.4.1 3.4.5 Unicode 4.1 update, CLDR 1.3 update, ICU4J charset detection, ICU4C high performance text access
ICU 3.2 3.2.1 3.2 CLDR 1.2 integration.
       
Prior
Releases:
(mirror) 
 These are the previous releases of ICU.
Due to the age of these older releases, it is recommended that you use a newer version of ICU for current development.

For more details on building ICU once you've checked out the code, please see the readme.html in ICU.

Latest Development Milestone


There is no development milestone available at this moment.

Other Downloads

The following are some ICU tools that are available in addition to ICU.

Tool Description
ICU4J Time Zone Update Utility This tool provides a simple way to update installed copies of ICU4J with the latest time zone data. Updates are required when the rules for transitioning between standard time and daylight (summer) time change in any part of the world.
RB Manager This resource bundle manager allows you to edit your program resource bundles more easily through a user-friendly interface. It also allows importing and exporting of resources to multiple formats.
XLIFF2ICUConverter This tool allows you to convert XLIFF files to ICU ResourceBundle format.
 ICU4JNI  ICU4JNI provides Java Native Interface bindings to ICU4C collation and conversion routines.