I want opening new incognito window of Chrome or new private window of Firefox in Context menu via PortableApps.com Platform, but this is unavailable.
New: HandBrake (Feb 20, 2026), Platform 30.2 (Feb 17, 2026)
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You can use the Private Browsing add-on for Firefox Portable: https://portableapps.com/apps/internet/private_browsing
It creates an enhanced version of Firefox's incognito mode with an entirely separate profile and bundled an adblocker.
Sometimes, the impossible can become possible, if you're awesome!