Update: Our directory's location filters weren't as good as our data. We've made some critical updates to them: You can now filter listings by the city, country, or continent that they're based in, and/or the geographic focus of the project.
(Before, you had to select the specific headquarters location, which is often a street address, and not very helpful). We'll roll these filters out to more views throughout the site.
https://app.civictech.guide/mobile