Wobbly* is an app started by a former Deliveroo courier @KingMob to mobilize workers like that.
Workers and customers would not just be mobilized to strike and boycott, but also to connect with each other using an alternative platform that cuts the middleman.
social.coop is a cooperatively-run corner of the Fediverse. The instance is democratically governed by its members, who generally share an interest in the co-op model, but topics of discussion range widely.
Our instance is supported by sliding scale contributions of $1-10/mo made via Open Collective. You must have an active Open Collective account to apply for membership; you may set one up here