PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
MyCase - Practice More, Manage Less.
Zoho Desk - Industry's first context-aware Helpdesk Software
Clio - Clio provides a full suite of web-based practice management tools targeted specifically at the administrative needs of sole practitioners and small firms.
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.