The biggest difference in Aesprite's case is a limit on distribution. From their own blog post on the subject: > [The new EULA] still gives you the possibility

The biggest difference in Aesprite's case is a limit on distribution. From their own blog post on the subject: > [The new EULA] still gives you the possibility to compile and modify the program for your own purposes, but it doesn’t allow you to redistribute Aseprite. Fully open source licenses do not restrict the end user's freedoms in this way; rather, they generally encourage (and sometimes require) sharing source code modifications so the larger community can benefit from your work. This tends to be at odds with some commercial models (especially the "sell copies of software" model) so there's much debate about when each type of license is most appropriate.