Looking for logging into the Nsf 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 Nsf site. After that you can login as usual with your login credentials.
https://identity.research.gov/
https://www.research.gov/research-portal/appmanager/base/desktop%3F_nfpb%3Dtrue%26_pageLabel%3Dresearch_page_howDoILogin
https://www.fastlane.nsf.gov/jsp/homepage/proposals.jsp
https://clients.nsf.org/
https://standards.nsf.org/login/
https://webapps.nsf.org/cusweb/faces/client/login_client.jspx
https://www.northsouth.org/app6/login.aspx
https://socialecology.uci.edu/pages/how-establish-fastlane-login-nsf-doctoral-dissertation-improvement-grants
http://www.google.ie/url?url=http://www.nsf.ac.lk/index.php/component/user/login
http://www.google.ie/url?url=http://www.lion.com.my/Apps/coi.nsf/login
https://www.nsfreu.org/login
https://icecores.org/user/login
https://www.ibec.ie/IBEC/IBEC.nsf/vPages/home%3FOpenDocument%26Login%3D1