Looking for logging into the Salesforce Partner Portal Url 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 Partner Portal Url site. After that you can login as usual with your login credentials.
https://partners.salesforce.com/loginSwitcher
https://success.salesforce.com/answers?id=90630000000heRMAAY
https://developer.salesforce.com/forums/?id=906F0000000App6IAC
https://partners.salesforce.com/
https://help.salesforce.com/apex/HTViewHelpDoc?id=sites_customer_portal_setup.htm
https://salesforce.stackexchange.com/questions/49861/is-there-a-way-to-customize-partner-portal-login-url
https://www.cirrusinsight.com/blog/support-for-partner-portal-users
https://webkul.com/blog/customer-portal-in-salesforce/
https://support.getconga.com/Conga_Composer/Advanced_Composer_Solutions/Composer_Tips_and_Tricks/How_to_Integrate_Conga_Composer_in_Salesforce_Communities
https://a5corp.com/salesforce-services/salesforce-community-portal/
http://www.nuageexperts.com/blog/enable-salesforce1-for-your-partner-community-users-in-3-simple-steps-1
https://help.formassembly.com/help/340344-salesforce-communities
https://blogs.perficient.com/2015/01/13/customize-your-salesforce-community-url/