The ASReview software is Free and Open Source Software (FOSS). To support the development, you can donate on the ASReview donation page. Even small donations are highly appreciated!
How do you go from user to contributor? There are many ways to join in, and it might be less complicated than you expect. In a blogpost, we list some easy examples for first-time contributors, for example sharing your experiences or answering user questions on the Discussion platform.
All contributions, small or large, are very much appreciated!