Supply to Surrey lists contracts being offered by Surrey County Council, Surrey Police, the University of Surrey and the county's 11 boroughs and districts.
The site has been spearheaded by the county council as part of a drive to stimulate economic growth which has also seen it pledge to ensure 60% of its spending on goods and services is with local businesses.
It comes after the successful launch of BuildSurrey helped Surrey earn a government award for being among the top 10 authorities in the country to do business with.
Firms have clinched construction contracts worth more than £10m through the BuildSurrey initiative, which can be accessed through Supply to Surrey, which opened for business in October 2014.
Contracts worth up to £250m annually are signed by the county council alone.
Denise Le Gal, Surrey County Council's Cabinet Member for Business Services, said: "Local businesses are the bedrock of every community and launching Supply to Surrey is about helping them and our economy thrive.
"BuildSurrey has already demonstrated our determination to help our firms create jobs, promote growth and ensure communities prosper by awarding more than £10m worth of contracts.
"With the new site offering hundreds of millions of pounds worth of contracts annually from a range of public services in Surrey, I'm sure it too will go from strength to strength."