Declude has reached its EOL but is not dead. It still works absolutely fine, not sure where you are getting your information from but you may want to check with the people who manage Declude namely Mail's Best Friend. Declude has been rebuilt from the ground up as DR (Declude Reboot) which is currently in Beta testing.
Email : firstname.lastname@example.org
Web : www.mailsbestfriend.com
Office : 866.919.2075