Something's wrong with that link, first time I've seen that. Perhaps the site is undergoing maintenance at the mo and it should work later.
Since Coriolis is down it seems, how about Inara? This is the site I said was the most useful I've used. It is the sort of thing that Elite should have embedded. What does it do? Lots of things
-- Tracks your fleet and locations
-- Tracks your rank and medal progress
-- Tracks your income and expenditures
-- Tracks all of your materials
-- Has all engineering blueprints, and combined with the point above, shows you if you have enough mats on board to apply that modification. Massive time saver here
-- Tracks your friends
-- Has the full trade network, updated in near real time (all data comes from players and it cannot be up to date at all times, some info lags).
-- Inara is great to find the closest thing you are looking for, whether it be a certain ship or module, a trader, a commodity, whatever. When you have Inara set up right, it tracks your location and a quick search will yield results in ascending proximity. Another massive time saver. These sorts of things make you a much more efficient Elite player.
Elite Dangerous Database is also great for this.
And lots more, but I don't want to bore anyone lol. Not sure if it's public, but here's my Inara page
https://inara.cz/cmdr/69080/
If it doesn't show at least it's a link to Inara itself.