AFMs often prefer low-intensity interventions with only a few sessions and low-threshold access. Web-based interventions offer low-intensity as well as low-threshold access to the professional help system and allow help independent of time and place. In addition, they offer anonymity and privacy, which is especially important for highly stigmatized topics, and have the potential to reach people not actively looking for support. To date, no therapeutic approach has yet proven to be superior, although behavioural therapy approaches are often used. The same applies to specific AFM interventions. Over the past decade, specialised web-based interventions for AFMs in different countries and languages were developed, ranging from online counselling to guided and unguided self-help programmes. These interventions have shown promising results in studies, especially regarding overall life satisfaction, self-efficacy expectations, coping skills, satisfaction with the relationship with the affected individual and a transformation in stigmatizing beliefs about addiction. Furthermore, internet interventions have the potential to reduce the burden of AFMs as well as to decrease and prevent depressive symptoms and anger. Programmes are often discontinued after the funding period of the study ends. This is a concern that needs to be addressed. At the moment, there are several programmes for AFMs: For all AFMs, there is BreakThrough (Peart et al., Drugs Educ Prev Policy 31:1–8, 2023) and Sterk Ernaast (van Beek et al., Drugs Educ Prev Policy. 31:1–10, 2023), for AFMs of persons with a gambling problem there are EfA (Buchner et al., Suchttherapie 18(4):184–95, 2017), Gambling Help Online (Rodda et al., Asian J Gambl Issues Public Health 3(1):12, 2013) and Online-CBT for treatment-refusing problem gamblers (Magnusson et al., J Consult Clin Psychol 87(9):802–14, 2019) and there is Kopstoring for children (Woolderink et al., J Med Internet Res 17(12):e274, 2015).