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JStock vs Portfolio Performance: catalog facts
JStock	Portfolio Performance
Free Free open-source software supported by donations.	Free Free and open source under the Eclipse Public Licence 1.0.
Windows, Android	Windows, macOS, Linux
Covers 28 stock markets Portfolio tracking with net worth calculation	True time-weighted and internal rate of return, not a simplified percentage Handles several accounts and depots as one portfolio
Market data depends on what the app can fetch for each exchange Interface is a traditional desktop application	Eclipse-based, so it is heavy and the interface is unusual The terminology assumes some investing knowledge
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: EPL-1.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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