All 254 parks to be found in the two cities can be found by location, postcode or facilities and an events calendar lets users find out what's on in parks nearby.
The site doubles up Scotland's only crowd-funding site specifically for parks and green-space projects.
One of the first projects to feature on MyParkScotland will be the Hayburn Play Park in Glasgow which already raised £70k towards its target of £81k and will be looking to raise £550 to create a mini-orchard.
In Edinburgh, the Friends of Figgate Park will be raising money for bat boxes and in Saughton Park they're looking to bring an historic bandstand back to life.
MyParkScotland can be used to make a donation to a park in Edinburgh or Glasgow. Users can Gift Aid donations and this 'extra funding' will go towards building an endowment fund for Scotland's parks – helping to safeguard our national treasures for future generations.
MyParkScotland is supported by the Rethinking Parks programme funded by Nesta and the Heritage Lottery Fund.