Siril is described as 'astronomical image processing tool, able to convert, pre-process images, help aligning them automatically or manually, stack them and enhance final images'. There are five alternatives to Siril for Windows, Linux and Mac. The best alternative is DeepSkyStacker, which is free. Other great apps like Siril are Regim (Free), IRIS (Free Personal), PixInsight (Paid) and Fitswork (Free).
- 5 alternatives