You can download our latest featured release from our Download page.
Full installation instructions can be found here, and complete documentation for the featured release can be found here.
As well as our featured release, more recent development releases are available from our Nightly Builds page. Our development releases include many experimental libraries and runtimes and are sometimes a little unstable, but if you want to see where we are heading they are worth exploring.
Besides, if a nightly build crashes on you, there will be another one along tomorrow... 
Remember to register your copy of MoSync if you want to get automatic device profile updates, hotfixes, and full access to our website (including this forum).
Please report any installation problems you find on this thread.
