It swooped on Brazilian midfielder Bernard from Shakhtar Donetsk and Barcelona players Yerry Mina and Andres Gomes.
But Tottenham Hotspur ended the window as the only club not to bring in a new player while Manchester United were unable to bring in the central defender they were reported to be keen to recruit.
Playmaker Bernard arrived on a free transfer after his contract ended with the Ukrainian club while Barcelona said Everton had agreed to sign centre back Mina for an initial €30.3 million ($NZ52.8 million) and have taken midfielder Gomes on loan.
The fee for Mina, who only joined the Spanish champions in January, could rise by €1.5 million and Barcelona have inserted a buy-back clause in the player's contract.
The Merseyside club, who appointed Portuguese manager Marco Silva during the close-season, could add a fourth deadline day signing after the Liverpool Echo reported they had submitted a deal sheet in the hope of completing paperwork for a loan for Chelsea centre half Kurt Zouma.
Everton had already spent a reported £40 million on Brazilian forward Richarlison from Watford.
Tottenham had been keen to bring in Aston Villa's 22-year-old midfielder Jack Grealish but were reported to have had a £25 million offer rejected by the Championship club.
United had been linked with a number of central defenders including Bayern Munich's Jerome Boateng, Leicester City's Harry Maguire and Tottenham's Toby Alderweireld but head into the campaign without any addition in that area.
Last season's runners-up signed Brazilian midfielder Fred and Portuguese full back Diogo Dalot earlier in the window.
Promoted Fulham signed Spanish goalkeeper Sergio Rico on a season-long loan deal from Sevilla and were reported to be hoping to complete last-minute paperwork on a deal for Marseille midfielder Andre-Frank Anguissa and Manchester United's young defender Timothy Fosu-Mensah.
Leicester City signed Croatian defender Filip Benkovic from Dinamo Zagreb and Turkish centre back Caglar Soyuncu from Bundesliga club Freiburg and they also secured their England striker Jamie Vardy to a new four-year contract.
West Ham United took their total of summer signings to nine as Spanish striker Lucas Perez was brought in from Arsenal and Colombian midfielder Carlos Sanchez joined from Serie A club Fiorentina.
Southampton were reported to be trying to sign striker Danny Ings from Liverpool on a season loan.
The new Premier League season starts on Saturday (NZT).
The transfer window remains open in Spain until the end of August and closes in Italy on August 17.
