docassemble - docassemble is a free, open-source expert system for guided interviews and document assembly.
Clio - Clio provides a full suite of web-based practice management tools targeted specifically at the administrative needs of sole practitioners and small firms.
Knackly - Generate contracts, emails, or other documents of any complexity by automating your knack for doing...
MyCase - Practice More, Manage Less.
HotDocs - Template-driven, automated document & form assembly software
PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.