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BGPalerter vs bgp.tools: catalog facts
BGPalerter	bgp.tools
Free Free and open source.	Freemium Free routing data and lookups; network, IRR and RPKI monitoring are paid.
Linux, Self-hosted, Command line	Web
Pre-configured for common BGP and RPKI problems Real-time detection of hijacks and visibility loss	Search by ASN, prefix, DNS name or MAC address Near realtime BGP data at no cost
Only useful to operators of their own prefixes or ASNs Releases are infrequent	Monitoring features require a paid account Assumes familiarity with BGP concepts
Self-hosted	Web application
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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