Vortimo is software that records, augments, recalls, scrapes, enrich, reports and finds web pages you've visited before.
Vortimo Proper has been replaced by OSINT-tool. It's a lot slicker and easier and provides similar functionality as Vortimo Proper. OSINT-tool is produced by Vortimo, the same people, the same company.
You can learn more about OSINT-tool at https://osint-tool.com.
You can read about the differences between Vortimo Proper and OSINT-tool on this webpage:
If you REALLY need the extension you can install it here, but it's not supported since July 2023.