papaw vs PELock

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.

PELock protects compiled 32-bit Windows applications against cracking, tampering, and reverse engineering, while providing software licensing tools. It protects Portable Executable formats including EXE, SCR, DLL, OCX, CPL, BPL, DPL, ACM, and AX. Anti-debugging methods detect cracking tools and block their actions. The license key manager handles users and keys, generates and verifies RSA-2048 keys, and can block illegally shared keys. Trials can be limited by days, executions, an expiration date, or minutes of use. A virtual DLL binder combines an application and libraries into one EXE, loading those libraries in memory without writing them to disk. SDK examples cover C/C++, Delphi, Lazarus, FreePascal, PureBasic, PowerBASIC, D, and Assembler. Plugins can add compression, detection, licensing checks, and loader functions. The maker lists Windows support from Windows 95 through Windows 10 and Server 2003 through 2012, with 32- and 64-bit support. Pricing starts at 59 one-time; listed licenses cost 159.00 USD or $299, paid once.