Topolograph.com is an online project which can visualize OSPF/ISIS topology based on LSDB output from a single network device. Then you can not only see (and check) the shortest path from source to destination, but also see the outcome from link or node failure along the path to the destination.

History of all changes in OSPF Topology

This is dockerized version of topolograph

MCP server for Topolograph service to talk to OSPF/IS-IS domains

Export BGPLS network events to Topolograph to track changes

Topolograph - Headstart

The Topolograph Python SDK provides a high-level, Pythonic interface to interact with the Topolograph REST API and to collect and upload topology data directly from network devices.