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Open Log Viewer vs QLogExplorer: catalog facts
Open Log Viewer	QLogExplorer
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under GPL-3.0.
Windows, macOS, Linux	Windows, Linux
Opens multiple log files in tabs Follows changes to log files	Handles large files through chunk indexing Supports plain text, JSON, and NDJSON logs
Desktop app built with Electron	Listed downloads are Linux Flatpak and Windows releases
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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