mozleak
Library for extracting memory leaks from leak logs files
Decision gist · record as of 2026-08-14
No. The package is abandoned since 2018-12-20, targets only Python 2.7, and has not been updated since. Unless you are maintaining legacy Python 2 Firefox testing infrastructure, seek a modern alternative or current Mozilla testing tools.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 2.7; no Python 3 support.
- Low install friction with no runtime dependencies.
- Package is abandoned since its latest release on 2018-12-20 and targets Python 2.7 only.
License · maintenance · safety
MPL (copyleft) — Licensed under MPL (copyleft). Use is permitted but derivative works and modifications must be distributed under the same license terms.
last release 2018-12-20 (2794 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 111,228 downloads/mo, #12,426 on PyPI
Alternatives
Verify before relying
pip install mozleak
import mozleak
# Parse leak logs using mozleak's leak extraction functions- Whether the package still works with modern Firefox or current leak log formats
- Availability of leak log file format documentation or examples in the fact sheet
- Whether any Mozilla projects still actively use this package
- What specific leak extraction functions are available and how to call them
What it is and what it does
Mozleak is a Python library for parsing and extracting memory leak information from Firefox leak log files. It was designed as part of Mozilla's mozbase testing infrastructure to help developers and QA engineers identify and analyze memory leaks during Firefox development and testing.
The package has been unmaintained since 2018-12-20 and is written exclusively for Python 2.7. It has no runtime dependencies, making installation straightforward, but its age and lack of Python 3 support make it unsuitable for modern development workflows unless you are working with legacy Firefox testing infrastructure that still relies on Python 2.
Use it for
- Analyzing memory leak logs from Firefox automated testing pipelines in legacy Python 2 environments
- Extracting leak summaries from raw leak log files for historical Firefox builds
- Integrating leak detection into Mozilla's mozbase testing framework if still in use
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The package is abandoned since 2018-12-20, targets only Python 2.7, and has not been updated since. Unless you are maintaining legacy Python 2 Firefox testing infrastructure, seek a modern alternative or current Mozilla testing tools.
Install
mozleak on PyPI
Before you install
Low install friction with no runtime dependencies. Package is abandoned since its latest release on 2018-12-20 and targets Python 2.7 only.
Requires Python 2.7; no Python 3 support.
License in practice
Licensed under MPL (copyleft). Use is permitted but derivative works and modifications must be distributed under the same license terms.
Quickstart
pip install mozleak
import mozleak
# Parse leak logs using mozleak's leak extraction functionsVerify before relying
- Whether the package still works with modern Firefox or current leak log formats
- Availability of leak log file format documentation or examples in the fact sheet
- Whether any Mozilla projects still actively use this package
- What specific leak extraction functions are available and how to call them
Package facts
| License | MPL copyleft |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Abandoned 2,794 days since the last release |
| First released | |
| Downloads | 111,228 / month, #12,426 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Programming Language :: Python :: 2 :: OnlyProgramming Language :: Python :: 2.7 |
Evidence: mozleak-0.2-py2.py3-none-any.whl
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See also guppy3 · mozcrash · mozversion · mozsystemmonitor · mozdebug · mozshellutil · mozlog · mozfile · pyleak · Pympler