In late 2021, Nebulosity was officially made free and open-source. The source code is hosted on GitHub under OpenNebulosity .
Nebulosity 4.4.4 is designed as a lightweight, comprehensive tool for both image capture and post-processing. Beginner's Guide to Working with Nebulosity 4 Nebulosity 4.4.4
The following report outlines the status, features, and availability of , a veteran astrophotography software suite developed by Craig Stark of Stark Labs . As of 2026, the software has transitioned from a commercial product to an open-source project. Current Status and Availability In late 2021, Nebulosity was officially made free
Users can unlock the legacy version of the software using the public license key provided by the author: N4-14627-55834-23500-59673 . Core Functional Features Beginner's Guide to Working with Nebulosity 4 The
Version 4.4.4 (specifically 4.4.4a) is the final stable release issued by the original developer.