Smarta.com has been set up to provide advice, inspiration and contacts for people trying to launch or expand a business.
Organisers of the new site hope it will enable small enterprises quickly to become more profitable and efficient.
Theo Paphitis, owner of Ryman Stationery and panellist on the BBC programme, said: "Each week, I receive hundreds of requests from people wanting advice about becoming an entrepreneur, so I am delighted that Smarta.com has been set up to provide practical help and support."
Another Dragons' Den star, entrepreneur Deborah Meaden, said: "As an uncluttered, informative and collaborative online business resource, Smarta.com will give a much needed upgrade to small business support in the UK.
"Its user friendly approach will enable and empower all different types of entrepreneur and small businesses across all stages of development."
Baroness Vadera, minister for competitiveness and small business, said: "In the current economic climate it is more important than ever that entrepreneurs have the confidence and support they need to cultivate and develop their ideas. Smarta.com will be an important resource in achieving that aim."
Founder of Smarta, the businesswoman Shaa Wasmund, said: "A new approach is needed for entrepreneurs and small businesses more than ever before. Smarta.com will allow users to tap into the brains, experience, and ideas of the entrepreneurial community."
Features of the website include:
:: Being able to set up a new business in 30 minutes
:: Ability to create profiles, connect and interact with other business owners
:: Hundreds of video guides, features and special reports, providing advice on all aspects of starting and expanding a business
:: Video interviews of leading entrepreneurs sharing their experiences and knowledge
:: Q&A forum where members can get answers from other entrepreneurs and experts
:: Free professional advice from financial and legal services companies.
Smarta aims to have 200,000 users by the end of this year. Anyone interested in signing up, should visit www.smarta.com Tweet