Timed URL Opener
Open unlimited URLs at once or one by one with a timer, in tabs or popup windows.
Browsers only allow a pop-up/tab when you click a button, so the first URL always opens, but later timed ones (and "All at once") can be blocked. Click the blocked-popup icon in the address bar and choose "Always allow pop-ups" for this site once, then start again. Keep this tab open while the timer runs. Everything runs in your browser — no URLs are sent to our server.