Npgsql is an open source ADO.NET Data Provider for PostgreSQL, it allows programs written in C#, Visual Basic, F# to access the PostgreSQL database server. It is implemented in 100% C# code, is free and is open source.

An Entity Framework Core provider is also available, and exposes some features unique to the PostgreSQL database to EF Core users.

Finally, a legacy Entity Framework 6.x (non-Core) provider is also available, but is no longer being actively maintained.

The best way to get help for Npgsql is to post a question to Stack Overflow and tag it with the npgsql tag. If you think you've encountered a bug or want to request a feature, open an issue in the appropriate project's github repository.

Npgsql is licensed under the PostgreSQL License, a liberal OSI-approved open source license.

Current active contributors to Npgsql are:

Past contributors to Npgsql:

A special thanks to Jetbrains for donating licenses to the project.