I'm sure this has been posted already, but I just found out about it on some video about decompiling an N64 ROM. Apparently it can reconstruct C++ code from compiled binaries.

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Ghidra is one of many open source software (OSS) projects developed within the National Security Agency. Complete source code for Ghidra along with build instructions have been added to the repository. Please read the updated CONTRIBUTING guide to find out more about how you can join the community.

https://ghidra-sre.org

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Ghidra is a software reverse engineering (SRE) framework developed by NSA's Research Directorate for NSA's cybersecurity mission. It helps analyze malicious code and malware like viruses, and can give cybersecurity professionals a better understanding of potential vulnerabilities in their networks and systems.

https://www.nsa.gov/resources/everyone/ghidra/