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is there a way to detect what software is installed in computer using php/javascript or any plugin.
what i want to do is if a client open our site using firefox or ie and our web detected that chrome is installed, the chrome will open automatically directing to our site.
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No you can't do that. That would be a huge security risk.
This is not possible, I'm sorry.
No, that is not possible, not unless you ask the user to install and run client-side software written using something other than JavaScript. To allow otherwise would be a large security and privacy risk.