Jive offers VoIP, video conferencing, and contact center tools and services. Monthly VoIP fees range from $19.95–$29.95/user for up to 50+ users.
Phone.com is a voice-over-internet-protocol (VoIP) phone service and business phone system provider. Monthly fees range from $12.99 to $59.99.
Zoho CRM allows users to manage their contacts and automate their email marketing and lead generation tasks. Prices range from $0 to $55/user/month.