Observability & Monitoring

Leakage

Write memory leak tests for your JavaScript applications.

Status
UnmaintainedNo commits in 1306 days.
Last checked
Checked · Oct 11, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

Leakage is a tool that helps developers write and run memory leak tests in their JavaScript applications, ensuring efficient memory usage and preventing performance issues caused by leaks.

Leakage stands out as an essential tool for developers looking to automate the detection of memory leaks in their JavaScript applications, offering detailed insights and integration with popular testing frameworks.

When it fits — and when it doesn’t

A good fit for

  • JavaScript developers who need to ensure their applications do not suffer from memory leaks, especially those working on long-running processes or complex web apps.

  • Teams that require detailed insights into how and where memory is being leaked in their JavaScript codebases.

Look elsewhere if

  • Projects that are primarily focused on frontend performance optimization without a need for deep memory leak analysis

  • Developers who prefer manual testing methods over automated tools

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited support for non-JavaScript environments

    Leakage is primarily designed for JavaScript applications and may not work seamlessly in other runtime environments or with compiled languages.

  2. 02

    Complex setup process

    Integrating Leakage into existing projects requires significant configuration, including setting up test frameworks and modifying application code to enable leak detection.

  3. 03

    Performance overhead during tests

    Running memory leak tests with Leakage can introduce noticeable performance slowdowns, especially in large-scale applications where extensive testing is required.

  4. 04

    Sparse community and support resources

    As an open-source project, the community around Leakage is relatively small, leading to fewer contributions, slower issue resolution, and limited user-generated documentation or examples.

What it does well

  • Automated memory leak detection in JavaScript applications

  • Integration with popular testing frameworks like Jest and Mocha

  • Detailed reports on detected leaks

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Leakage

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →