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KMyMoney vs Firefly III: catalog facts
KMyMoney	Firefly III
Free Free and open source under the GPL.	Free Free and open source under the AGPL 3.0. You provide the hosting.
Windows, macOS, Linux	Windows, macOS, Linux, Web, Self-hosted
Double-entry accounting with proper investment and loan handling Online price quotes for securities	Budgets, categories, tags, bills and recurring transactions in one place Rules that categorise transactions as they arrive
Pulls in KDE libraries, which makes the Windows and macOS builds heavy	A PHP application with a database that you have to run and update Bank imports need a separate companion tool
Downloadable app	Self-hosted
Open source	Open source
License: GPL-2.0	License: AGPL-3.0
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 September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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