As a women entrepreneur in Toronto, I've found some great groups focused on helping female business owners succeed. Here's my list of groups in GTA, especially those in the startup and technology fields.

Ladies Learning Code - http://ladieslearningcode.com
One of my favourite groups; wonderful organizers, mentors, and teachers offering affordable classes in coding and technology. "We’re a women-run not-for-profit group working to empower everyone to feel comfortable learning beginner-friendly technical skills in a social, collaborative way."

Women and Tech - http://womenandtech.com
A new and awesome group.  They are inviting 50 kick butt women in technology out for coffee and then will write about them in their blog and app.  You can nominate a female in technology today at their website.

Girls in Tech Toronto - http://girlsintechtoronto.com
A great group of smart and friendly tech girls.  Hosts Power Hour Socials with great guest speakers.  "Girls in Tech Toronto launched in early 2011, and is focused on connecting, empowering and advocating for women and girls in tech. We do this by hosting events and mixers, helping out with area conferences and tech events, and spotlighting awesome women and their contributions to the tech industry."

Canadian Women in Technology - http://www.cwc-afc.com/home.cfm 
"CWC raises the profile of women working in the communications and technology field through a number of benefits, services, awards and internships, a national mentoring program, local and national events, professional development, high-profile initiatives like the Women on Boards program and through strong partnerships with government agencies, industry corporations and other associations."

Rotman Women in Business - http://women.rotman.utoronto.ca
"We provide professional women with leadership development opportunities, new ways of thinking and vital connections that help them advance and succeed in their careers. We are a trusted partner to forward-thinking corporations and organizations through our custom programs, presentations and events, and diversity consulting."

Girl Geeks Toronto - http://www.meetup.com/GirlGeeksToronto/  
"We call ourselves "girls" because we're young at heart and we call ourselves "geeks", because we care about the detail, but essentially we're just smart women who get technology. Technology may include programming, engineering, electronics, interactive design, IT management, chemistry, biology and more!"