Automated Signature Technology
Automated Signature Technology is dedicated to providing the best signature reproduction equipment possible. We design and manufacturer all of the machines that we sell.
http://www.signaturemachine.com/

My John Hancock
Free and custom animated e-mail signature files, also provides information on how to set up a signature file in an email client.
http://www.myjohnhancock.net/

Signature
Free, open-source producer of dynamic signatures for e-mail and news postings. Allow signing messages with a different .signature every time.
http://www.caliban.org/linux_signature.html

Dollz International
Learn the history of dolls from around the world. Request a doll signature or suggest a dolls signature.
http://groups.msn.com/DollzInternational/_whatsnew

Digital Signature Guidelines Tutorial
Discusses the legal implications of digital signature usage. (American Bar Association)
http://www.abanet.org/scitech/ec/isc/dsg-tutorial.html

Ultra Electronics Signature Management Systems
Ultra Electronics PMES, for the design, manufacture and support of electronic and electromechanical products and software systems for aerospace and defence markets.
http://www.uesms.co.uk

Signature Creator
Delphi forum for creating an HTML signature, using a program created for users of this forum.
http://forums.delphiforums.com/signature99/start

XML-Signature Syntax and Processing
Provide integrity, message authentication, and/or signer authentication services for data of any type, whether located within the XML that includes the signature or elsewhere (W3C Proposed Recommendation 20 August 2001).
http://www.w3.org/TR/xmldsig-core/

PacketAlarm
Real-time network sensor-based Intrusion Detection System (IDS). Based on snort, features include live signature updates and custom signature creation.
http://www.packetalarm.com

Mahjqa ssignatures
Animated GIFs used as a signature on several message boards. Gallery of computer art work and pencil drawings by the artist. Images can be used for personal use. Custom email signature, graphics, and banner design available by email.
http://www.mahjqa.com/