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Spider vs Tangram: catalog facts
Spider	Tangram
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0 licence.
Linux	Linux
Each web app is sandboxed in its own WebKit instance Titlebar adapts to the site's theme colour	Keeps web apps in a dedicated window apart from the main browser Native GNOME application
Built for GNOME on Linux only Uses WebKit, so sites tuned for Chromium may behave differently	Linux only Not meant for general browsing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Needs internet
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.