How can we practise and make the same application mentioned in appmarket .? Is there any way of deploying the free application of appmarket to local dev environment and can practise by refferencing the code for learning purpose ?
Discussion posts and replies are publicly visible
There's a few practice Apps that Appian bundles with a Community Edition. These are designed to be picked apart to learn how to build them or rebuild them. There's also the Acme Automobile App that runs through all the Online Academy.
Not only that, but any free App on the App Market is kind of, by default, open source. There's really nothing anyone can do to prevent your developers from tinkering. Most are designed as a starting point intended for developers to make into a bespoke version for your org.
Have fun!
But from where we will fetch code or object of free app of app market to rebuild them?
Very simply, when you purchase an app or a solution and install it, in Appian Designer [/design] you'll see the application. Inside, you'll see all the application objects. Depending on legalities (fine print) you can edit those application objects to your heart's content. It's roughly identical to any apps you create yourself. Just a necessary result of how Appian works.