title: How to find out on what framework or in which language was the website created?
body: <p>How can I find out on what framework or in which language was the website created?</p>
  
  <p>For example, if a person sends me a link to his own website that he has created and he claims that this website was build with (For example) Ruby on Rails (or CodeIgniter (or whatever)), how can I be sure, that he truly used this framework or language to create this website?</p>
  
  <p>Why am I asking... On websites like Elance clients ask freelancers to show them the examples of their previous projects. So, if I am a client, how can I be sure, that this person sends me the project, that is created in the language and framework I need? Because he can have (for example) a lot of CodeIgniter projects, but he will tell me that those are created via Rails to get hired.</p>
  
  <p>It can be his own server, with a free domain name and free hosting, (I don't care). What I mean is how to know this information I need, not using different internet tools where you can simply put the URL and get the description of the website. Because he can have his own server, with a free domain name and free hosting... So his website would not be listed there.</p>