JEB

JEB is a reverse-engineering platform for professionals and researchers analyzing apps, binaries, and other technical files. It is best suited to work that spans Android and multiple architectures or benefits from scripted analysis; the Community Edition is a narrower starting point, while broader module access is a significant paid commitment.

Overview

JEB brings disassembly, decompilation, debugging, and analysis of code and document files into one platform. Its modules cover Intel x86 and x86-64, ARM, MIPS, RISC-V, WebAssembly, Ethereum contracts, Siemens S7 PLC programs, and PDF documents. That breadth is a real advantage for practitioners who move between targets, but plan choice matters because the Android plan is limited to Android modules while Pro plans include all modules.

PNF Software, founded by Nicolas Falliere in 2013, is based in Silicon Valley, California. JEB has a mixed licensing model, with free, monthly, annual, floating-seat, and OEM options.

Key features

Android and other targets

JEB supports static and dynamic Android application analysis, including multi-dex decompilation, resource reconstruction, and debugging of Dalvik and native code. That makes the Android edition a focused choice for app analysis without paying for the full module set. Native-code and bytecode decompilation and debugger integration broaden its use beyond Android. RISC-V support has boundaries: RV128, RVE, and several exotic extensions are excluded, and floating-point decompilation is planned rather than included.

Automation and integrations

Python and Java scripting, plugin support, and headless front ends let teams build repeatable analysis workflows rather than rely solely on the desktop client. The VIBRE assistant and MCP server connect to OpenAI, Anthropic, Google Gemini, and AWS Bedrock compatible endpoints, as well as MCP clients including Codex CLI, Claude CLI, OpenCode, and LM Studio. These integrations add options for connected workflows, while offline work is specifically included in the Android and Pro plans.

Desktop client and licensing

The GUI client runs on Windows, Linux, and macOS on x64 and arm64 systems and requires JDK 21 or above. A floating license allows up to its licensed seat count to connect concurrently; a seat becomes free when a client leaves, which suits shared capacity better than assigning each user a dedicated seat.

Pricing

JEB offers a free trial, but its demo limits decompilation to a subset of code, disables project saving and loading and clipboard use, imposes time-limited sessions, and requires an internet connection. It is useful for a constrained evaluation, not a substitute for an unrestricted offline workflow.

• JEB Community Edition: 0.00 USD, free. It provides x86 and x86-64 decompilation and is aimed at researchers, students, hobbyists, and reverse engineers at nonprofit organizations. The narrow architecture scope makes it a poor fit for broader production work.
• JEB Android: $140 a month, billed monthly at $140 per user. It includes Android modules, the official UI client, extensions, and offline work. It is the focused paid option for Android specialists who do not need all modules.
• JEB Pro: $2,000 a year, billed yearly at $2,000 per user. It includes all modules, the official UI client, extensions, and offline work. This is the stronger fit for individual practitioners working across JEB's target range.
• JEB Pro Floating: $4,000 a year, billed yearly at $4,000 per seat. It includes all modules, floating seats, the official UI client, and extensions. Teams can share licensed concurrent capacity, though the price is per seat rather than per user.
• JEB Pro OEM: $8,000 a year, billed yearly at $8,000 per server. It includes all modules, SaaS and back-end integrations, and third-party front-end clients. This targets product or service integration, not a standard individual desktop workflow.

Eligible JEB Pro license holders can add priority support for 30% of the license cost, with replies within one business day and prioritized bug reports. The published entry price of $1,200/user/yr does not match the listed JEB Pro annual price of $2,000 per user, so buyers should compare the specific plan scope and terms before committing.

Platforms

The desktop client supports Windows, Linux, and macOS on x64 and arm64, with JDK 21 or above required. JEB also supports API-based automation and headless front ends. The desktop prerequisite is relevant for managed environments; the stated platform coverage does not make the client a web app.

Who it's for

JEB is a strong fit for reverse engineers who need Android analysis alongside native and bytecode decompilation, debugging, or specialized targets such as PLC programs and PDF documents. The Community Edition suits the stated researcher, student, hobbyist, and nonprofit audience when x86 and x86-64 are enough. Android-only practitioners can avoid the full Pro price with the monthly Android plan. Teams needing broad module coverage should weigh Pro's per-user cost against Floating's shared concurrent seats; OEM is the relevant route when the software must sit behind a service or third-party interface.

Pros and cons

• Pro: A wide set of code and document targets, including Android, WebAssembly, Ethereum contracts, PLC programs, and PDFs, reduces the need to switch tools across those formats.
• Pro: Python and Java scripts, plugins, and headless front ends support automation for repeatable or large-scale analysis.
• Pro: Android analysis includes static and dynamic workflows, multi-dex decompilation, resource reconstruction, and Dalvik and native debugging.
• Con: The free Community Edition is limited to x86 and x86-64 decompilation, while the demo restricts code coverage and core project functions and requires internet access.
• Con: Full module access starts at a substantial annual per-user price, and Floating and OEM carry higher annual seat or server costs.
• Con: The desktop client requires JDK 21 or above, and RISC-V support excludes several variants with floating-point decompilation still planned.

Alternatives

For adjacent options, browse Decompiler Software or Reverse Engineering Tools.

• Binary Ninja is worth considering if its free evaluation and education plan, with five decompilation architectures but no API or plugin access, is enough; its listed Personal plan is a one-time purchase.
• Boomerang is a free, BSD-licensed open-source decompiler for readers seeking that alternative.
• IDA Pro offers a free edition for x86-32 and x86-64 disassembly with two cloud-based decompilers, or a paid Essential plan for readers comparing a different paid option.
• rev.ng may suit readers interested in a Free Software decompilation pipeline, with its UI offered commercially in cloud and standalone versions.
• Bytecode Viewer is a free, GPL v3 open-source option for readers whose needs fit that tool.
• CFR is a free option for readers seeking a tool with no paid plans or usage limits stated.
• Ghidra is another free option for readers comparing alternatives.
• ILSpy is a free, MIT-licensed open-source alternative.

Verdict

Choose JEB if your work genuinely benefits from its combination of Android analysis, broad target coverage, and automation, and select the edition that matches those needs. The Community Edition is a practical fit for its stated audience and limited architectures; professionals needing all modules should budget for Pro or a floating license. Look elsewhere if you need broad capability at no cost or cannot accept the demo's constraints and the paid plans' substantial annual pricing.