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NuGet Trends Gitter chat Twitter Follow

Nuget Trends Web Codecov Scheduler


NuGet Trends holds historical data of NuGet packages download numbers. It's a useful tool for package maintainers to see the download rate of their packages and also for people interested in packages popularity over time. The database has the complete catalog which include target framework information. That means that there's a lot more features we can add, like TFM adoption overtime, dependency graphs etc.


Images published at:


We want to get a script to bootstrap the development environment but it's not here yet. That means now you'll need to:

  1. Run docker-compose up to get the services.

And either:

  1. Restore a DB backup to get some data, like the packages and some download number.


  1. Run Entity Framework migrations to get the database schema in place.
  2. Run the catalog importer from scratch.
  3. Run the daily download importer for a few days to get some data in.


  • .NET SDK 5
  • Docker, Compose (for the dependencies, postgres, rabbitmq)
  • Node.js 15.0.1 (might also work with higher versions)
  • Yarn (We use Yarn instead of npm)

Run the jobs

Background jobs are done using Hangfire. It lives in the NuGetTrends.Scheduler project. Once you run it (i.e: dotnet run) its dashboard will be made available through http://localhost:5003/.

The jobs are scheduled to run at an interval. You can browse the dashboard and trigger the jobs on demand though.

One of the jobs is to download the NuGet's catalog. The second is to hit the's API and get the current number of downloads for each package and store in the database.


The website is composed by two parts: An Angular SPA and an ASP.NET Core API. The API is at the root of src/NuGetTrends.Web/ and the SPA is in the Portal sub-folder.

To run it localy:

SPA (src/NuGetTrends.Web/Portal)

  1. Install the SPA dependencies: yarn install (only the first time)
  2. Run the SPA: ng serve

API (src/NuGetTrends.Web) 2. Run the API with dotnet run

The app can be browsed at:

  • http://localhost:5000
  • https://localhost:5001
  • http://localhost:4200 (default ng serve port)

Note: You might need to see how to install/trust the ASP.NET Core HTTPS development certificates (not required but nice to have)

Database backup for contributors

We host a DB backup with the latest month's download counts. This will help you see some data on and fill the charts when developing. The backup can be grabbed here: and is a compressed postgres database.

You can pull the repo and run docker-compose up at the root of the project to get the required services. That will give you an empty postgres database though.

Note to .NET SDK version and global.json

We lock the .NET SDK version via global.json to have a reference version and avoid surprises during CI. If you don't have that exact version, usually anything with that major works just fine. If you just want to quickly build, try just deleting global.json.

.NET Foundation

This project is supported by the .NET Foundation.


  • for supporting open source projects like this free of charge.
  • JetBrains for providing free licenses for core contributors.