PixInsight is an advanced image processing software platform. It has been designed specifically for astrophotography and other technical imaging fields. PixInsight is a modular, open-architecture system where the entire processing and file handling capabilities are implemented as external installable modules.

PixInsight has been ported natively to FreeBSD, Linux, Mac OS X and Windows operating systems and is available in 32-bit and 64-bit versions on all supported platforms. PixInsight is a strongly multithreaded environment able to exploit all processors and processor cores available on modern hardware.

PixInsight is both an image processing environment and a software development framework. The PixInsight Core application integrates three user interfaces: a graphical interface, a command-line interface, and a scripting interface based on the JavaScript language. As a development platform, PixInsight provides the PixInsight Class Library (PCL), an ISO C++ framework for development of PixInsight modules, and the PixInsight JavaScript Runtime (PJSR), an ECMA 262-3 V5 compliant environment readily available in the PixInsight Core application.