LeadFox - Web-based lead management & marketing automation solution
EmailPlayground - EmailPlayground provides solution to schedule and send emails with ease.
OptimizePress - WYSIWYG page editor based on Wordpress.
SendLater - Email scheduler for Mac Mail.
LeadPages - LeadPages™ Software is the world's easiest landing page generator. It's the easiest way to build conversion optimized & mobile responsive landing pages.
RGB Technologies - Email Scheduler - Email Scheduler provides an intuitive email scheduling solution, integrated within the existing Salesforce account.