Project Summary
X Window System protocol binding library. Originally for C bindings, but now generalized to several other languages. This is a lightweight replacement for the binding portion of Xlib, featuring thread transparency, XML extensibility, and a small and straightforward interface.
The version of Xlib currently being distributed by X.Org uses XCB for its transport; this allows XCB and Xlib calls to be freely mixed for ease in porting applications and toolkits.
Most of the XCB C code is autogenerated from XML descriptions. (This may be why Ohloh complains about the degree of code commenting.)
In a Nutshell, XCB...
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has a well established, mature codebase
maintained by a average size development team
with increasing Y-O-Y commits -
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took an estimated 18 years of effort (COCOMO model)
starting with its first commit in September, 2001
ending with its most recent commit 20 days ago
MIT License
Permitted
Commercial Use
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Distribute
Sub-License
Private Use
Forbidden
Hold Liable
Required
Include Copyright
Include License
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 )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryAug 2 2026 — Sep 1 2026
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12 Month SummarySep 1 2025 — Sep 1 2026
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