CyberChef – The Cyber Swiss Army Knife
Love how the contributors all have what seems like dedicated accounts with no 'legal name'. Take for example this: https://github.com/gchq/CyberChef/commits?author=n1474335    n1474335

Great name. In typical GCHQ style they have good OPSEC.You can find more contributors here:https://github.com/gchq/CyberChef/graphs/contributors    d98762625
    s2224834

Among others :)