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fblog vs Logdy: catalog facts
fblog	Logdy
Free Free software under the WTFPL license.	Free The Apache-2.0 licensed Logdy core is available at no charge.
Command line	Windows, macOS, Linux, Command line, Web, Self-hosted
Prints selected fields from JSON logs Can filter messages with Lua	Real-time viewing and filtering from files, stdin, sockets, and REST API Full-text search and automatically generated facets
Designed for JSON logs. Does not support native log tailing.	Limitations not stated
Downloadable app	Downloadable app, Self-hosted
Closed source	Open source
License: WTFPL	License: Apache-2.0
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 5, 2026

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