Psiphon 3 clients for iOS and Mac OS X are coming soon. Psiphon 3 for Windows is never distributed as an installable package.
Each Psiphon 3 for Windows client is a single executable file ('.exe') that is digitally signed by Psiphon Inc. Windows automatically checks this signature when you run the client.
You can also manually inspect the signature before running the client by invoking the Properties dialog for the file and inspecting the Digital Signatures tab. Certificate public key is displayed in the Certificate dialog Details tab.
