Accounting

Armanino McKenna - Nonprofit/Social Enterprise accounting expertise

Business

REDF - Venture Feasability worksheets and Business plan template
NeSST - Guidebook, worksheets, and case studies for business planning
Business Plan Pro - Software which guides you from assesssment through business plan writing
Fieldstone Alliance - Book which includes assessment through business plan writing
Seedco - Comprehensive business plan writing toolkit, including financial worksheeets
SCORE - More generic small business planning tool

Free Legal Resources  

San Francisco Bar, Volunteer Legal Services (CORP) Program - Pro bono attorney matching, training seminars in San Francisco 
Legal Aid Foundation of Los Angeles - Pro bono attorney matching, LA area
Public Council - Largest pro bono public counsel in the world
Lex Mundi - Largest association of independent law firms
Pro bono assistance for members of the Social Enteprise Alliance
Neighborhood Legal Services of LA County - Provide legal support and pro bono for nonprofits in LA county
Public Law Center - Pro bono support for Orange County (based in Santa Ana)
Legal Aid Society of San Diego - Pro bono support for San Diego

 IT & Web Development

Dayspring Technologies - Web Development/Email/Online tools
Covalent LLC - IT/Network support

Marketing & Advertising

American Marketing Association - Membership organization, network, recognition, information resource
Bay Area Star - Membership organization for Bay Area advertising executives
Cable TV Advertising Bureau - Membership organization for Cable TV advertising, information resource
Cause Marketing Forum - Socially oriented marketing resource
ClickZ - Interactive Marketing resource & news site
Cable TV Association of Marketers - Membership organization, news
Emarketer - Online marketing research, information resource
Google Adwords - for Nonprofits

Internet Advertising Bureau - Membership organization, news & training, policy
National Association of Broadcasters - Membership organization for TV, information resource, policy
Radio Advertising Bureau - Membership organization for radio stations, policy
Small Business Association - Small business marketing basics and planning resources
Taproot - Service grants for marketing and branding consulting
The Class - Pro bono management consulting (including marketing) to Bay Area nonprofits
YouTube "broadcast your cause" program for nonprofits

Social Enterprise Resources

Ashoka - Global social enterprise projects/fellowships
Business Plan Pro for Social Enterprises - Business plan Software
Cause Marketing Forum - Advertising & marketing tools and strategies

Changemakers - Social Enterprise forum and project examples
Full Circle Fund - Funder for nonprofit projects and enterprises
Investors' Circle - Social Enterprise funder (U.S.)
Innovations Journal (MIT) - Journal
Kauffman Foundation - Social Enterprise Funder
National Center for Social Entrepreneurs - Information resource
Net Impact - Information resource

Omidyar Network - Social Enterprise Funder (global)
REDF - Social Eenterprise Funder and information resource
SeaChange Capital Partners - Social Enterprise funder for nonprofits
Skoll Foundation - Social Enterprise Funder (global)
Social Edge - Online discussion forum
Social Enterprise Alliance - Support network & information resource
Social Innovation Conversations - Informational podcasts
Social Venture Network - Information resource, Forum, Support Network
Stanford Graduate School of Social Innovation - Information resource
The Institute for Social Entrepreneurs - Information resource
The Social Enterprise Reporter - News & information on social enterprise trends, projects, and best practices

Strategic Planning and Consulting

Bridgespan - Nonprofit Management Consulting (paid)
Community Wealth Ventures - Management consulting to nonprofits on social enteprise (paid)
Haas Board Fellows - Cal Berkeley MBA students to join your Board of Directors as a Fellow
S-Cubed - Cal Berkeley MBA students provide hands-on consulting help
Stanford Alumni Group - Pro bono management consulting & strategic planning
Taproot - Pro bono branding & HR help
Virtue Ventures - Strategic business planning, workshops and training for SEs
Social Enterprise Group - Strategic business planning, workshops and training for SEs
UCLA Net Impact - UCLA Anderson School MBAs consult with nonprofit organizations
Net Impact - Local MBA chapters & students that can be tapped for specific projects