Okteta is recommended for developers, software engineers, and IT professionals who frequently work with binary files. It is particularly beneficial for those using KDE or Linux systems, as it integrates smoothly with those environments. It’s also useful for hobbyists and students interested in learning more about binary file manipulation.
IDA - The best-of-breed binary code analysis tool, an indispensable item in the toolbox of world-class software analysts, reverse engineers, malware analyst and cybersecurity professionals.
Java Decompiler - Yet another fast Java decompiler
Hiew - Hiew (short for Hackers view) is a popular console hex editor for DOS and Windows written by Eugene...
Decompiler.com - Online Java and Android decompiler. Just drag and drop .JAR or .APK file and browse decompiled content online.
WinHex - WinHex hex editor, disk editor, RAM editor. Binary editor for files, disks, and RAM. Download HEX EDITOR. Sector editor. Drive editor.
dnSpy - .NET assembly editor, decompiler, and debugger