Sharepoint - List all Site Level and Web Level features programmatically

The below sample is just for listing all site feature and current web level features.

static void Main(string[] args)

        {

            using (SPSite site = new SPSite("http://site collection url"))

            {

                Console.WriteLine("");

                Console.WriteLine("Site URL=" + site.Url);

                Console.WriteLine("");

                foreach (SPFeature f in site.Features)

                {

                    Console.WriteLine(f.Definition.Id + "======" + f.Definition.DisplayName + "======" + f.Definition.Parent);

                }

                using (SPWeb web = site.OpenWeb())

                {

                    Console.WriteLine("");

                    Console.WriteLine("\n\n Web URL=" + web.Url + "\n\n");

                    Console.WriteLine("");

                    foreach (SPFeature f in web.Features)

                    {

                        Console.WriteLine(f.Definition.Id + "======" + f.Definition.DisplayName + "======" + f.Definition.Parent);

                    }

                }

            }

            Console.WriteLine("");

            Console.WriteLine("Program Completed");

        }

If you want to display all web level features from all the subwebs, you need to write a recursive function to loop through all subsites and display the features.