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VB Decompiler VS Bytecode Viewer

Compare VB Decompiler VS Bytecode Viewer and see what are their differences

VB Decompiler

VB Decompiler Perfect source code recovery solution for Visual Basic 5.0/6.0 applications and fast disassembler for Visual Studio .NET compiled apps

Rating
0 reviews
Alternatives Is it good?
BV
Bytecode Viewer

A Java 8 Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

No screenshot yet
Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
Thalam
OpenAI-compatible API gateway for GPT, Claude, Gemini, DeepSeek, Qwen, Kling and more. One key, one endpoint, one bill. Pay per token, no lock-in. sponsored

Which is more popular?

Based on our record, Bytecode Viewer seems to be more popular. It has been mentioned 2 times since March 2021.

social mentions
0 vs 2
SRE popularity
100% vs 0%
alternatives listed
28 vs 24

Base details

Website, pricing, platforms and company facts side by side.

VB Decompiler
BV
Bytecode Viewer
Website vb-decompiler.org bytecodeviewer.com
Pricing —
Open source
Listed in
Developer Tools SRE Decompiler IDE +1
Development Tool IDE Gaming Software +1

Features and specs

What each product offers, as listed by its team.

VB Decompiler 0 features
BV
Bytecode Viewer 5 features

No features have been listed yet.

  • Comprehensive Toolset
    Bytecode Viewer offers an integrated suite of tools including a decompiler, disassembler, debugger, and analytics tool, which allows for a thorough inspection and analysis of Java bytecode within a single application.
  • User-Friendly Interface
    The tool is designed with an intuitive and user-friendly interface that simplifies the process of navigating and analyzing bytecode, even for users who may not have extensive experience in reverse engineering.
  • Multiple Decompiler Engines
    Bytecode Viewer supports multiple decompiler engines like CFR, Fernflower, Procyon, and others, allowing users to choose the best-suited one for their specific needs and preferences.
  • Cross-Platform
    The application is built to run on multiple platforms, including Windows, MacOS, and Linux, due to its Java-based nature, ensuring accessibility for users on different operating systems.
  • Open Source
    Being an open-source software, Bytecode Viewer allows users to contribute to its development, customize features, and inspect the source code to more deeply understand its workings.

Possible disadvantages

  • Performance Issues
    Some users have reported performance issues, particularly with large files or projects, which can lead to slower analysis and increased resource usage.
  • Limited Support for Other Languages
    While Bytecode Viewer excels with Java and Android bytecode, it doesn't support other programming languages, which might limit its utility for developers working in diverse environments.
  • Complexity for Beginners
    Despite its user-friendly interface, the complex nature of bytecode and reverse engineering might overwhelm beginners without enough support or guidance within the tool itself.
  • Dependency on Java Environment
    Since Bytecode Viewer is Java-based, it requires a Java Runtime Environment to be installed and configured correctly, which might add an extra step for users who do not have Java set up.
  • Occasional Bugs
    As with many open-source projects, Bytecode Viewer can sometimes have bugs that might affect its stability or functionality, depending on its version and the system it's run on.

Analysis

An editorial look at what each product does well and who it suits.

VB Decompiler
BV
Bytecode Viewer

Overall verdict

  • VB Decompiler is a solid, specialized tool for its niche purpose—analyzing and reverse-engineering Visual Basic compiled executables (both p-code and native code). It's good at what it's designed for, though its usefulness is inherently limited to legacy VB5/VB6 applications since VB.NET uses different compilation methods better handled by standard .NET decompilers.

Why this product is good

  • Effectively disassembles and analyzes VB5/VB6 compiled executables, recovering form layouts, string tables, and procedure structures
  • Provides both a free version for basic analysis and a paid Pro version with more advanced features like better pseudo-code generation
  • Long-standing tool with years of development focused specifically on VB internals, giving it deep specialization
  • Useful for malware analysis since older VB-compiled malware is otherwise hard to reverse engineer with generic tools
  • Generates readable pseudo-code approximations that can significantly speed up manual reverse engineering work

Recommended for

  • Security researchers and malware analysts examining legacy VB6 malware samples
  • Reverse engineers needing to recover logic from old VB5/VB6 software with lost source code
  • Developers maintaining or auditing legacy VB6 applications without original source access
  • Digital forensics professionals encountering VB-compiled binaries in investigations
  • Hobbyists interested in understanding how old Visual Basic executables are structured internally

No analysis of Bytecode Viewer yet.

Videos

Walkthroughs and reviews on video.

VB Decompiler 2 videos + Add
BV
Bytecode Viewer 1 video + Add

VB Decompiler - P-Code Decompilation

More videos

  • - VB Decompiler - Native Code Decompilation

Bytecode Viewer Beta 1.5.3

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
VB Decompiler
BV
Bytecode Viewer
100% 100%
SRE
0% 0%
17% 17%
IDE
83% 83%
100% 100%
Developer Tools
0% 0%
0% 0%
Development
100% 100%

User comments

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

VB Decompiler no reviews yet
BV
Bytecode Viewer no reviews yet
  • Reverse engineering tools review
    www.pelock.com · Sep 2022

    Applications created with Visual Basic 5 and 6 are all in the past now. However, internal structure of code based on P-Code was a cradle for .NET technology and from the very beginning it's been causing problems with...

We have no reviews of Bytecode Viewer yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

VB Decompiler 0 mentions
BV
Bytecode Viewer 2 mentions

Tracking VB Decompiler since Oct 2022.

  • CandyPixel - Known Information Wanted Please.
    If you do use this plugin I'd recommend also using https://bytecodeviewer.com/ to check the supposed malicious lines of code. Source: over 4 years ago
  • A response from r/AskReddit. Are we even surprised?
    Take a look at tools like this one to get an idea of what you can actually get: https://bytecodeviewer.com/. Source: over 4 years ago

Alternatives to VB Decompiler and Bytecode Viewer

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