Analyzed
about 6 hours
ago.
based on code collected
1 day
ago.
Project Summary
Flex a tool for generating text scanners in C. The input file read by Flex specifies a set of rules (code to be executed when a pattern is found) which describe the scanner to be generated. The output of Flex is a C source file which can be compiled and linked with your sources, giving to your executable the scanning capabilities tailored to your needs.
Generally, Flex is used in combination with a parser generator, like Bison.
In a Nutshell, Flex...
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has a well established, mature codebase
maintained by a large development team
with increasing Y-O-Y commits -
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took an estimated 6 years of effort (COCOMO model)
starting with its first commit in November, 1987
ending with its most recent commit 1 day ago
Quick Reference
BSD 3-clause "New" or "Revised" License
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
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 )
Project Vulnerability Report
Security Confidence Index
Poor security track-record
Favorable security track-record
Vulnerability Exposure Index
Many reported vulnerabilities
Few reported vulnerabilities
Did You Know...
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in 2016, 47% of companies did not have formal process in place to track OS code
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compare projects before you chose one to use
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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 SummaryOct 8 2026 — Nov 7 2026
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12 Month SummaryNov 7 2025 — Nov 7 2026
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