Free UPX is a free, portable, extendable, high-performance executable packer for several executable formats.
Best UPX (Ultimate Packer for eXecutables) Alternatives ranked by AI · updated May 2025
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UPX is a versatile executable packer with excellent compression ratios and speed.
Price: Free
Top 3 UPX (Ultimate Packer for eXecutables) alternatives
PECompact is a Windows executable compressor and packer for software developers distributing Portable Executable files. It adds more configurable packing options and...
Pros
- Offers more Windows PE-specific controls than FUPX
- Supports plugins and multiple compression engines
- Can integrate into professional software release workflows
Cons
- Costs more than FUPX and UPX
- Windows-only focus limits cross-platform packaging
- More complex to configure than FUPX
Paid; pricing varies by license
VMProtect is a commercial software protection and licensing system.
Pros
- Software protection features
- Supports multiple platforms
Cons
- Paid software
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