OpenAsar

OpenAsar

OpenAsar is an open-source replacement for the proprietary ASAR archive format used by Electron apps. It allows developers to inspect, modify, and repackage Electron app content more easily.
OpenAsar image
electron asar archive unpack inspect repackage

OpenAsar: Open-Source Replacement for ASAR Archive Format

Open-source replacement for the proprietary ASAR archive format used by Electron apps, allowing developers to inspect, modify, and repackage app content more easily.

What is OpenAsar?

OpenAsar is an open-source tool that provides full support for working with ASAR archives used by Electron apps. ASAR (Atom Shell Archive Format) is a zip-based packaging format created by GitHub for Electron apps.

With OpenAsar, developers can extract the contents of ASAR files, make modifications, and repackage the app easily. This gives more transparency and flexibility compared to the closed proprietary ASAR format.

Key features of OpenAsar include:

  • Unpacking ASAR files while preserving permissions and symlinks
  • Repacking modified files back into the ASAR archive
  • Asar command line tool for manipulation without needing to write code
  • Node.js API for programmatic ASAR file handling
  • Support for patching ASAR content without full repacking

By providing an open replacement for ASAR, OpenAsar makes it simpler for developers to inspect, customize, and debug Electron app packages. It removes limitations imposed by the closed-source ASAR implementation.

OpenAsar Features

Features

  1. Unpacks and repacks ASAR files
  2. Inspects and modifies app content
  3. Open source and cross-platform
  4. Command line interface
  5. JavaScript API

Pricing

  • Open Source

Pros

Free and open source

Allows modifying Electron apps

Better than proprietary ASAR format

Active development and support

Cons

Less widely used than ASAR format

Requires learning new tool

Less support from Electron compared to ASAR

Potential compatibility issues


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