# \#zlib

**URL:** https://discourse.itk.org/tag/zlib/199.md

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## [ITK 5.3 Release Candidate 1 available for testing](https://discourse.itk.org/t/itk-5-3-release-candidate-1-available-for-testing/4421)

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**Author:** [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)\
**Replies:** 0\
**Last updated:** [September 14, 2021, 10:16pm UTC](https://discourse.itk.org/t/itk-5-3-release-candidate-1-available-for-testing/4421 "2021-09-14T22:16:18Z")

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We are happy to announce the Insight Toolkit (ITK) 5.3 Release Candidate 1 is available for testing! :tada: ITK is an open-source, cross-platform toolkit for N-dimensional scientific image processing, segmentation, and r…