Onesheet CRM - The Simple CRM for Google Sheets
Voiptime Cloud Call Center - Cloud call center & telemarketing solution
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
CallKite - Your website’s video call center in just one click.
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.
MangoCRM - MangoCRM is a Contact management for the rest of us. Add Unlimited users for $9/mo. No annual contracts. No hidden fees. No complications. Manage your business billing, contacts, leads, and more with Mango.