Project Summary
XZ Utils is free general-purpose data compression software with high compression ratio. XZ Utils were written for POSIX-like systems, but also work on some not-so-POSIX systems. XZ Utils are the successor to LZMA Utils.
In a Nutshell, XZ Utils...
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has a well established, mature codebase
maintained by a large development team
with decreasing Y-O-Y commits -
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took an estimated 10 years of effort (COCOMO model)
starting with its first commit in December, 2007
ending with its most recent commit 4 days ago
Quick Reference
GNU General Public License v2.0 or later
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
MIT
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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use of OSS increased in 65% of companies in 2016
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nearly 1 in 3 companies have no process for identifying, tracking, or remediating known open source vulnerabilities
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30 Day SummaryJun 23 2026 — Jul 23 2026
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12 Month SummaryJul 23 2025 — Jul 23 2026
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