TED
TED is where every contract above the EU threshold must be advertised, whichever member state is buying. It is the widest single source in European procurement, and the reason a company in one country can end up delivering in another.
Tenders Electronic Daily, the EU procurement journal
All EU member states, above the EU threshold
Why not just search TED yourself
You can, and the site is free. The difficulty is volume and language. TED carries tens of thousands of open notices at once, written in every EU language, by buyers who each describe the same work differently. A keyword search returns either far too much to read or, worse, quietly nothing, because the notice you needed called it something else. Reading by meaning is what turns that volume into a short list you can act on.
Above and below the EU threshold
Any contract above the EU threshold has to be advertised EU wide, and that is what TED carries. Everything below it is published nationally instead. The threshold is high enough that most of the work a smaller company can staff and deliver never reaches TED at all. That is the half of the market the national portals open up, and the reason they sit on the paid plans.
See what is open for your company
Setting up a profile takes a few minutes and your first matches are scored within the hour. The free plan covers every TED notice and needs no card.