VOGSY - Professional service automation tool built on Google G Suite
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Timewatch - Timewatch offers time tracking, expense management, resource scheduling and professional services automation solutions.
LeadMaster - The LeadMaster LeadMasterCRM All-in-One solution includes: marketing automation, lead management, email marketing, website integration & much more.
Krow - Krow Software is a professional service automation solution.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses