Tenderwacht and Vergunningwacht: Alerts on Open Data
Two services that watch new public tenders and permits, and email you when a saved search matches.
Following tenders and permits by hand is the kind of job where you eventually miss the one publication that mattered. I built two small services that do the watching for you.
Tenderwacht reads public tenders from TenderNed and TED. Vergunningwacht reads permit notices. In both you save a search, and you get an email as soon as a matching publication appears.
Both run on the same architecture as my KVKBase project: an Astro site, a Worker with scheduled jobs and a single database. That keeps them cheap to run and easy to keep in my head. Tenderwacht does not use tracking cookies.
Tenderwacht has been live since October 2026, with a free and a paid tier. Vergunningwacht (vergunningwacht.nl) is online and still being built.