Here’s a list of suggested no-cost, open-source alternatives to the market leader Adobe. As these are developed by and for specialists, they might not be as accessible as the „original“, but hey, at least they are free and just as powerful.
Please note, that My-ECI is in no way affiliated with the developers of these programs, we just found them to be the best alternative to proprietary software. Of course, all of the programs below are also available via github or sourceforge.
Europeans for Affordable Housing e.V.