List of Firefox 91 Browsers

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Agent First Seen (AEST) Last Seen (AEST)
Firefox 91 Linux (other) [278291] 2021-08-17 17:22:27 2026-09-18 13:06:01

Firefox 91 Linux Ubuntu [296768] 2025-06-24 16:31:17 2026-09-18 04:25:24

Firefox 91 Windows 10 [278233] 2021-07-26 12:46:53 2026-09-10 08:53:47