Effects plugins are software tools used in digital audio workstations (DAWs) to modify and enhance sound. They can add various effects, such as reverb, delay, or distortion, allowing musicians and producers to create unique audio textures. These plugins can be applied to individual tracks or the entire mix, helping to shape the overall sound of a project. Many effects plugins come in different formats, such as VST, AU, or AAX, making them compatible with various DAWs like Ableton Live, Pro Tools, or Logic Pro. Users can choose from free or paid options, with some plugins offering advanced features for professional sound design.