Independent.co.uk reported eight million unique users in September after being the only newspaper website to report double digit growth.
The results will be welcomed by the quality newspaper, which saw its print circulations plummet 12% year on year in the same month.
In a month boosted by people returning to work following the summer, and coverage of the build-up to the US presidential elections, Mirror Group Digital and The Sun online both posted falls in unique users, down 5.7% to 5.3 million and 1.3% to 15.7 million, respectively.
Guardian.co.uk received the most unique users at 24.2 million, with an increased proportion of UK traffic at 9.8 million, but month on month growth was slow at 4.7%.
Figures for the MailOnline, which is the combined site for the Daily Mail and The Mail on Sunday, were up 2.6% to 17.9 million unique users. The modest growth confirms Associated's success online has levelled off in the second half of the year.
The website regularly enjoyed first and second spot rankings at the start of the year, but relatively became the worst performing newspaper site in August, when unique users dropped 6.6%.
In second place is Telegraph.co.uk, with unique users growing 4% month on month to 22.9 million, citing the US election build-up and the credit crunch as key factors as well as two special projects run in September - a reader recollection project around World War II and an online novel by Alexander McCall Smith.
Third in the pecking order was the Times, which broke the 20-million barrier for the first time, with unique users for the month up 3.2% to 20.3 million. Coverage of the US elections and financial news were again attributed to the success. UK unique users hit a record high at 6.7 million.