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2345 Browser vs QQ Browser: catalog facts
2345 Browser	QQ Browser
Free Free to download.	Free Free to download from Tencent's site.
Windows	Windows, macOS
Chromium and IE dual engine for old enterprise sites Supports Chrome extensions, including offline CRX installs	AI summaries of pages, documents and videos Split-screen browsing and topic-based tab grouping
Interface and website are Chinese-only Bundles extras such as a game portal	Interface and site are in Chinese Proprietary, with AI features tied to Tencent services
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.