Login proxy for third-party applications

A computer-implemented method performed by a login service, the method comprising:

• receiving, from an auto-login component of a remote organization, a request to log a user of the remote organization in to a remote third-party application;
• communicating with the remote third-party application via a headless browser to log the user in to the remote third-party application;
• receiving, from the remote third-party application, a uniform resource locator (URL) of a start page of the remote third-party application and a session cookie indicating that the user is logged into the remote third-party application;
• and
• providing, to a browser of the user, the session cookie and a redirect to the URL of the start page,
• wherein the login service performs the communicating and the receiving of the URL before the receiving of the request to log in.

A non-transitory computer-readable storage medium storing computer program instructions executable by a computer processor, the instructions comprising:

• intercepting, by an auto-login component of an organization, a request from a client device of the organization to access a remote third-party application;
• generating, by the auto-login component, a substitute request that specifies a remote login service and includes at least part of the intercepted request, wherein the at least part of the intercepted request comprises an identifier of the remote third-party application;
• sending, by the auto-login component, the substitute request to a remote login service at the remote server;
• receiving, from the remote login service by a browser of the client device, a redirect request to the remote login service, the redirect request including the identifier of the remote third-party application;
• responsive to receiving the redirect request redirecting, by the browser to the remote login service;
• receiving, from the remote login service, based on the identifier of the remote third-party application, a uniform resource locator (URL) of a start page of the remote third-party application and a session cookie indicating that the client device is logged into the remote third-party application;
• and
• automatically requesting, by the browser, the start page of the remote third-party application, the request for the start page including the session cookie.