Take it like a gift

ysoserial
ysoserial

Generates payloads that exploit unsafe Java object deserialization.

Damn Vulnerable RESTaurant
Damn Vulnerable RESTaurant

An intentionally vulnerable web API game for learning and training purposes.

BaRMIe
BaRMIe

Enumerating and attacking Java Remote Method Invocation services.

bWAPP
bWAPP

An extremely buggy web application!.

hrekt
hrekt

A really fast HTTP prober.

DNSRecon
DNSRecon

DNS Enumeration Script.

mfoc
mfoc

Mifare classic offline cracker.

DeHashed
DeHashed

DeHashed provides free deep-web scans and protection against credential leaks.

jwt-heartbreaker
jwt-heartbreaker

Burp Suite extension to check JWT for using keys from known from public sources.

dontgo403
dontgo403

Tool to bypass 40X response codes.

AzureGoat
AzureGoat

A damn vulnerable Azure infrastructure.

IAMagic
IAMagic

Advanced AWS access credentials scanner.

JWT cracker
JWT cracker

JWT brute force cracker written in C.

Fuzzapi
Fuzzapi

Used for REST API pentesting and provide UI solution for gem.

endoflife.date
endoflife.date

Informative site with EoL dates of everything.