No open-source alternative with same feature set exists. Developers reliant on LINQPad must pay for PRO to unlock professional needs (NuGet, databases).
LINQPad is a lightweight, powerful, and indispensable utility for .NET developers. Created by Joseph Albahari (co-author of C# 10 in a Nutshell ), it serves as an interactive code execution environment, a SQL query tool, and a rapid prototyping platform. While initially designed to test Language Integrated Query (LINQ) queries against databases, it has evolved into a full-featured C#/F#/VB.NET scratchpad that can replace immediate windows, debug sessions, and even parts of unit testing for exploratory development. linqpad
Query a SQLite database containing a Users table, filter by age, and visualize as a chart. No open-source alternative with same feature set exists
because it combines database browsing, code execution, and rich output visualization in a single, fast (~15 MB) executable. Created by Joseph Albahari (co-author of C# 10
LINQPad is a lightweight "scratchpad" for .NET developers that allows you to instantly write and execute C#, F#, or VB.NET code without the overhead of creating a full Visual Studio project. Beyond simple code execution, it is widely used for interactively querying databases using LINQ or SQL and visualizing complex data structures. Core Features and Capabilities