WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Lini - Perform simple batch operations on Linkedin contacts
MySignature - MySignature is FREE Email Signature Generator that helps to create Professional Signatures for major email clients such as Outlook, Gmail...
SHIELDAPP for LinkedIn - Redefining LinkedIn Analytics since 2019
Sigstr - Email signature marketing
Groupboss - CRM for Facebook Group Owners & Community Leaders