Looking for logging into the Salesforce Developer Edition site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Salesforce Developer Edition site. After that you can login as usual with your login credentials.
https://login.salesforce.com/
https://developer.salesforce.com/signup
https://developer.salesforce.com/forums/?id=906F00000005JWkIAM
https://intellipaat.com/tutorial/salesforce-tutorial/creating-salesforce-developer-account/
http://developer.force.com/chatterdevchallenge/challengeLogin
https://force.desk.com/customer/en/portal/articles/2871586-how-to-sign-up-for-trailhead-with-a-developer-edition
https://www.oreilly.com/library/view/salesforcecom-customization-handbook/9781849685986/ch01s10.html
https://www.janbasktraining.com/blog/create-salesforce-developer-account/
https://salesforce.stackexchange.com/questions/160585/cant-login-to-developer-org-how-to-contact-salesforce-support
https://www.quora.com/What-are-the-limitations-of-a-Salesforce-free-developers-account
https://workbench.developerforce.com/
https://twitter.com/salesforcedevs
http://www.salesforcegeneral.com/salesforce-articles/sign-up-for-a-free-salesforce-wave-analytics-developer-accou.html