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QLogExplorer vs Retrospective Log Analyzer: catalog facts
QLogExplorer	Retrospective Log Analyzer
Free Free and open source under GPL-3.0.	Paid Commercial software; pricing is available on the developer’s pricing page.
Windows, Linux	Windows, macOS, Linux
Handles large files through chunk indexing Supports plain text, JSON, and NDJSON logs	Collects logs from Docker and Kubernetes alongside files Fetches remote logs over SSH
Listed downloads are Linux Flatpak and Windows releases	Uses kubectl to access Kubernetes container logs.
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
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.