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Head-to-head · Executable Packers

UPX vs Virbox Protector

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score UPX #2 in Executable Packers 8.9/10 Free plan Free plan✓ 0 of 1 features Visit UPX
Virbox Protector #5 in Executable Packers 7.9/10 30-day trial Free trial✓ 1 of 1 features Try Virbox Protector

UPX leads on 1 check, Virbox Protector on 1, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreUPX · 8.9/10
  • Free planonly UPX
  • Free trialonly Virbox Protector
  • Most featuresVirbox Protector · 1 of 1

UPX scores higher on our rubric for executable packers: 8.9 against 7.9 out of 10; our editors rank them #2 and #5.

UPX offers free plan; Virbox Protector doesn't. Virbox Protector offers protection features; UPX doesn't.

UPX is the better fit for free cross-platform compression. Virbox Protector is the better fit for multi-platform and multi-format protection.

  • UPX fits best

    Free cross-platform compression

  • Virbox Protector fits best

    Multi-platform and multi-format protection

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Side by side

Feature UPX 8.9/10 Visit ↗ Virbox Protector 7.9/10 Visit ↗
At a glance
Editor score 8.9 7.9
Ranking #2 in Executable Packers #5 in Executable Packers
Best for Free cross-platform compression Multi-platform and multi-format protection
Pricing model Free Paid
Starting price Free plan $299/yr
Free plan ✓ (best) —
Free trial — 30 days
Deployment Desktop Self-hosted, Desktop
Platforms Windows, macOS, Linux Windows, Linux, macOS
Support Docs Live chat
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features UPX 0/1 · Virbox Protector 1/1
Protection features — ✓ (best)
Specs
Supported platforms Windows, macOS, Linux Windows, Linux, ARM Linux, macOS, Android, HarmonyOS, iOS
Binary formats PE, ELF, Mach-O, COFF, DOS/COM, DOS/EXE, DOS/SYS, Atari/TOS exe, dll, elf, so, dylib, jar, class, war, apk, aab, aar, app, js
Compression levels Advanced Not checked yet
Architecture support Multi-architecture Multi-architecture
License model Perpetual Not checked yet
Our review
Pros
  • Supports Windows, macOS, Linux, and multiple executable formats
  • Offers compression levels 1–9, --best, and multiple methods
  • Includes decompression, integrity checks, checksums, and size reporting
  • Supports Windows, Linux, ARM Linux, macOS, Android, HarmonyOS, and iOS
  • Protects many formats, including EXE, DLL, ELF, APK, AAB, JAR, and JS
  • Combines virtualization, encryption, obfuscation, anti-debugging, and anti-tampering
Cons
  • Command-line operation may require technical familiarity
  • Provides no verified protection features
  • Compressed commercial distribution has special license conditions
  • No free plan is listed
  • Annual pricing starts at $299
  • The two listed plans share the Professional Suite name
Our verdict

UPX is a free, portable, open-source command-line packer for compressing executable programs, DLLs, libraries, and other supported binaries. It supports Windows, macOS, and Linux, with coverage for formats including PE, ELF, Mach-O, COFF,…

Read the review →

Virbox Protector is application-hardening software for developers and organizations distributing desktop applications, mobile apps, Java, .NET, Python, Unity, embedded software, and other software assets. Its protection set includes code…

Read the review →
  1. UPXExecutable Packers 8.9Free plan
  2. Virbox ProtectorExecutable Packers 7.930-day trial

Strengths and trade-offs

  • UPX — where it wins

    • Supports Windows, macOS, Linux, and multiple executable formats
    • Offers compression levels 1–9, --best, and multiple methods
    • Includes decompression, integrity checks, checksums, and size reporting

    Where it doesn't

    • Command-line operation may require technical familiarity
    • Provides no verified protection features
    • Compressed commercial distribution has special license conditions

  • Virbox Protector — where it wins

    • Supports Windows, Linux, ARM Linux, macOS, Android, HarmonyOS, and iOS
    • Protects many formats, including EXE, DLL, ELF, APK, AAB, JAR, and JS
    • Combines virtualization, encryption, obfuscation, anti-debugging, and anti-tampering

    Where it doesn't

    • No free plan is listed
    • Annual pricing starts at $299
    • The two listed plans share the Professional Suite name

More comparisons

All executable packers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update