Dissemination of knowledge is essential for the progress of scientific research. It is in the interest of the academic community that research results are made freely available to everyone. It is possible to publish open access in almost every journal, and in most cases without any costs for the author.
Open access publishing can be done in open access journals (link), but also in traditional journals that are in principle only accessible through a subscription. Even articles behind the paywall of the publisher can in most cases be published open access in a trusted repository. Check the document below for journals with Open Access.
More info about Open Access can be found on the website of the UvA Library: