If you are looking for a way to convert color palettes saved in Photoshop .aco files to the Adobe .ase color swatch exchange files, then you can do that in Photoshop itself. Load the .aco file to Photoshop and then use swatch palette ► save swatch for exchange option and pick ASE format.
Convert Adobe Photoshop color palette and swatches data to Adobe Color Swatch Exchange file.
We found 3 software records in the database related to .aco to .ase file format conversion.
Microsoft Windows software - convert aco to ase on Windows
One of the best bitmap graphic editing program
Convert from aco file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned aco to ase. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert aco to ase on OS X
Mac version of popular digital image editor
A professional color-matching app for Mac