# Open-source alternatives for Reverse engineering

> Disassemblers, decompilers and analysis tools that replace expensive commercial suites.

## Paid products
- [Open-source alternatives to IDA Pro](https://repoquarry.dev/alternatives/ida-pro.md): Paid Hex-Rays disassembler and decompiler suite for analysing compiled binaries, with a debugger, scripting SDK and an MCP bridge for AI assistants. Pricing: IDA Free available; IDA Home from $365/year; IDA Pro Essential from €1,099/year, Expert from €4,999/year, Ultimate from €8,599/year (annual billing only).

## Top ranked projects
1. [Ghidra](https://repoquarry.dev/projects/ghidra.md): NSA's software reverse engineering framework with disassembly, decompilation, graphing, scripting and a debugger. Commercial use: Confirmed.
2. [REA (Reverse Engineer Anything)](https://repoquarry.dev/projects/rea.md): MCP server and CLI that lets AI coding agents inspect binaries, JavaScript/Electron apps, .NET assemblies and websites, with evidence. Commercial use: Confirmed.
3. [radare2](https://repoquarry.dev/projects/radare2.md): Command-line reverse engineering framework to analyse, emulate, debug, patch and disassemble binaries across many architectures. Commercial use: Partial.
4. [Cutter](https://repoquarry.dev/projects/cutter.md): Free and open-source graphical reverse engineering platform built on rizin, with a Ghidra decompiler plugin and Python or C++ plugins. Commercial use: Partial.
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Source: RepoQuarry (https://repoquarry.dev/categories/reverse-engineering). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.