Project Summary
[Archival project]
Closure LibraryThe Closure Library is a broad, well-tested, modular, and cross-browser JavaScript library. You can pull just what you need from a large set of reusable UI widgets and controls, and from lower-level utilities for DOM manipulation, server communication, animation, data structures, unit testing, rich-text editing, and more.
The Closure Library is server-agnostic, and is intended for use with the Closure Compiler. At Google, it's used in Gmail, Docs, Sites, Books, Reader, Blogger, Calendar, Picasa Web Albums, and more.
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In a Nutshell, closure-library...
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took an estimated 150 years of effort (COCOMO model)
starting with its first commit in November, 2009
ending with its most recent commit almost 2 years ago
Quick Reference
Apache License 2.0
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Sub-License
Private Use
Use Patent Claims
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
State Changes
Include License
Include Notice
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 SummaryJun 2 2026 — Jul 2 2026
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