A simple gui solution to manage your x.509 certificates.
SimpleCA implements a simple X.509 CA with a nice GUI. You can manage ssl or personal certificates. You have no configuration options : all is based on sensible defaults (1024bit keys, etc...). The basic features are present (generate certificate, revoke certificate, export pkcs12, revocation lists).
This site contains a Tcl-only version of SimpleCA.
https://github.com/matsimon/tcl-simpleCA