Altaxo

Altaxo is a lightweight and easy-to-use data management, manipulation and plotting software tool that was created to aid you in creating and editing graphs and tables.

It is written in C# for MS.NET. It is featuring worksheet views and plot views, a scripting language (currently C#) for automation and data processing, import of data from ASCII files or images, export of graphs and embedding of graphs in other documents.

Any projects that are saved are done so in a proprietary format called AXOPRJ.

It boasts multiple features to make sure it fits any of your requirements, but in case it doesn't, pretty much any aspect of Altaxo can be scripted using compiled C# code. Several modern features such as syntax highlighting and code completion render scripting easy.

You gain access to a huge mathematical and signal processing library, which is updated continuously.

In case you are looking to extend the features of Altaxo permanently, you can even do this by writing an extension to Altaxo yourself using C# code, which later integrates seamlessly with the main program.

The UI is simple to understand and comprehend allowing even beginners to get started right away with little help needed from the built-in documentation that the app provides.