ntfy

ntfy is a lightweight, self-hostable notification service that lets users push messages between any devices or scripts. It replicates the core connectivity goal of Pushbullet in a minimal, open-source package. Strengths include easy HTTP API access and no mandatory accounts. Against Pushbullet it offers greater customization and zero cost but requires users to handle their own server or accept a public instance, suiting developers who prefer simplicity over polished apps.