List of Firefox 139 Browsers

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Agent First Seen (AEST) Last Seen (AEST)
Firefox 139 Windows 10 [301661] 2026-02-17 03:53:58 2026-09-18 01:55:15

Firefox 139 Windows 10 [296635] 2025-06-08 20:08:41 2026-09-18 01:53:18

Firefox 139 Linux (other) [296767] 2025-06-24 12:42:31 2026-09-17 09:25:01