Project Summary
MAME is a multi-purpose emulation framework. MAME’s purpose is to preserve decades of software history. As electronic technology continues to rush forward, MAME prevents this important "vintage" software from being lost and forgotten. This is achieved by documenting the hardware and how it functions. The source code to MAME serves as this documentation. The fact that the software is usable serves primarily to validate the accuracy of the documentation (how else can you prove that you have recreated the hardware faithfully?). Over time, MAME (originally standing for Multiple Arcade Machine Emulator) absorbed the sister-project MESS (Multi Emulator Super System), so MAME now documents a wide variety of (mostly vintage) computers, video game consoles and calculators, in addition to arcades.
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In a Nutshell, MAME...
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has a well established, mature codebase
maintained by a very large development team
with increasing Y-O-Y commits -
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took an estimated 3,708 years of effort (COCOMO model)
starting with its first commit in December, 2007
ending with its most recent commit about 10 hours 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.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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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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anyone with an Open Hub account can update a project's tags
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use of OSS increased in 65% of companies in 2016
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data presented on the Open Hub is available through our API
30 Day SummaryJul 19 2025 — Aug 18 2025
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12 Month SummaryAug 18 2024 — Aug 18 2025
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Static Analysis ( Generated by Coverity Scan for mamedev/mame )
Repository URL: https://github.com/mamedev/mame
Version: mame0278-317-gc4fa8ecf865
- 2025-07-25
- Last Analyzed
- 8,562,655
- Lines of Code Analyze
- 1.81
- Defect Density
Defects by status for current build
- 37,587
- Total defects
- 13,769
- Outstanding
- 23,775
- Fixed