A ssh server that knows who you are. $ ssh whoami.filippo.io
...It is especially helpful when validating modern TLS features like ALPN, HTTP versions, and certificate behavior under different client stacks. Because the output is human-friendly, it doubles as an educational resource for understanding how transport and application-layer negotiations actually manifest. Teams use it to troubleshoot misconfigurations and confirm policy enforcement without setting up their own inspection endpoints.
A firefox extension that resolves an eXtensible Resource Identifier (XRI) and renders the eXtensible Resource Descriptor Set (XRDS) document in a human-friendly interface.