Remembering credentials for all the applications that you use can be difficult, moreover users of a company may like to have an alternate authentication method to be used for applications they use.
TestCollab now offers an alternate authentication method using Single Sign-On (SSO). As on the date of writing this article it supports Okta for SSO.
On the login page you get an option of logging onto the app using your SSO credentials. If you already have an active session on Okta then simply using this option would log you in to the application.