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SPECIFICTION
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papaw

github.com

Free plan LinuxSelf-hosted
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Spec score 7.9 #8 of 28 in Executable Packers

What it is

papaw is a Linux executable packer for programs that include statically linked third-party components, aimed at devices with limited disk space. It compresses executables and bundles them with a decompressor of about 15–40 KB. Supported algorithms are LZMA2, LZMA1, Zstandard and Deflate, and packed executables can replace themselves on disk when run. The project is free and unencumbered software under the MIT license, and can be self-hosted. It uses Meson and can be included as a Meson subproject; the README recommends `custom_target()` for running `papawify`. Prebuilt static binaries are available through GitHub releases, with example assets for aarch64, arm, armeb, i386, mips, mipsel and x86_64. To support portability, the project avoids machine-specific assembly and newer system calls such as `fexecve()`. Optional very basic anti-debugging protection is intended to discourage trivial reverse-engineering techniques. The payload is extracted to a temporary file; when run as root, papaw mounts a tmpfs filesystem and lazily unmounts it before extraction.

Spec sheet

Purpose
papaw is a permissively licensed packer for executables with statically linked third-party components, intended for devices with limited disk space.Read 8 Oct 2026 · github.com
Security
papaw can optionally provide very basic anti-debugging protection intended to discourage trivial reverse-engineering techniques.Read 8 Oct 2026 · github.com
License
The project is released as free and unencumbered software under the MIT license.Read 8 Oct 2026 · github.com
Anti-debugging
It can optionally provide very basic anti-debugging protection intended to discourage trivial reverse-engineering techniques.Read 8 Oct 2026 · github.com
Architecture coverage
The v28 release lists example executable assets for aarch64, arm, armeb, i386, mips, mipsel, and x86_64.Read 8 Oct 2026 · github.com
Build
papaw uses Meson as its build system and can be used as a Meson subproject.Read 8 Oct 2026 · github.com
Build integration
papaw uses Meson and can be included as a Meson subproject, with custom_target() recommended for running papawify.Read 8 Oct 2026 · github.com
Compression
Supported algorithms are LZMA2, LZMA1, Zstandard, and Deflate.Read 8 Oct 2026 · github.com
Download
The README says prebuilt static binaries are available from the project's GitHub releases.Read 8 Oct 2026 · github.com
Downloads
The README says prebuilt static binaries are available through GitHub releases.Read 8 Oct 2026 · github.com
Intended use
The README describes papaw as designed for portability across devices and says it avoids machine-specific assembly and newer system calls such as fexecve().Read 8 Oct 2026 · github.com
Maintainer
The GitHub profile identifies the repository owner as Dima Krasner and describes his work as low-level development specializing in C, Go, porting, *nix, and distro development.Read 8 Oct 2026 · github.com
Portability
The project avoids machine-specific assembly and newer system calls such as fexecve() to support portability across devices.Read 8 Oct 2026 · github.com
Release assets
The v28 release lists example binaries for architectures including aarch64, ARM, i386, MIPS, and x86_64.Read 8 Oct 2026 · github.com
Replacement
Packed executables can replace themselves on disk when run.Read 8 Oct 2026 · github.com
Self replacement
Packed executables can replace themselves on disk when run.Read 8 Oct 2026 · github.com
Size reduction
papaw compresses executables and packages them with a small decompressor executable of about 15–40 KB.Read 8 Oct 2026 · github.com
Temporary files
The payload is extracted to a temporary file; when run as root, papaw mounts a tmpfs filesystem and lazily unmounts it before extraction.Read 8 Oct 2026 · github.com

Plans and prices

papaw Free Free and unencumbered software under the MIT license Read 8 Oct 2026 · github.com

Every papaw plan and price →

Strong points and limits

Strong points

  • Free under the MIT license
  • Supports four compression algorithms
  • Prebuilt static binaries cover multiple architectures
  • Can replace packed executables on disk

Limits

  • Payload is extracted to a temporary file
  • Anti-debugging protection is described as very basic

Who it suits

It suits developers packaging statically linked executables for Linux devices where disk space and portability matter. Meson users can include it as a subproject.

Verdict

papaw focuses on compressing portable Linux executables, with several algorithms and multi-architecture release assets. Its temporary-file extraction behavior is worth accounting for when planning deployment.

Where Specifiction places it

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