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qpwgraph vs Helvum: catalog facts
qpwgraph	Helvum
Free Free and open source.	Free Free and open source under the GPL 3.
Linux	Linux
Visual routing of PipeWire audio and MIDI Drag-and-drop connections between ports	Visual graph of PipeWire nodes and links Connect streams by dragging
Linux with PipeWire only Assumes some familiarity with audio routing	Only works with PipeWire Linux only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-3.0-only
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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