Tā zài diànnǎo shàng ānzhuāng le jǐ kuǎn bùtóng de liúlǎn ruǎnjiàn.
He installed several different browsers on his computer.
Tips
usage
More common synonym is 浏览器 ('browser'). 浏览软件 is the literal compound 'browse software' and shows up in formal/technical writing rather than everyday speech.