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Psi vs Pidgin: catalog facts
Psi	Pidgin
Free Free and open source under the GNU General Public License.	Free Free and open source under the GPL. The project states it is free and contains no ads.
Windows, macOS, Linux	Windows, macOS, Linux
OMEMO, OTR and OpenPGP encryption via plugins Very flexible interface with multi-window and all-in-one modes	Signs in to several chat networks at once from one window XMPP, IRC, Bonjour, Gadu-Gadu, GroupWise, Sametime, SILC, SIMPLE and Zephyr built in
Last tagged release dates from 2020 Aimed at experienced users rather than newcomers	The interface is unmistakably from another era Support for modern commercial networks depends on plugins that break when APIs change
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License: GPL-2.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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