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Spider vs Web Apps: catalog facts
Spider	Web Apps
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Each web app is sandboxed in its own WebKit instance Titlebar adapts to the site's theme colour	Gives websites their own launcher entries and windows Works on Linux phones as well as desktops
Built for GNOME on Linux only Uses WebKit, so sites tuned for Chromium may behave differently	Linux only Small project with a modest number of contributors
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0-or-later
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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