KDE Connect

KDE Connect is an open-source solution focused on seamless phone-to-computer integration, directly addressing the "devices working better together" need. It supports notifications, file sharing, remote input, and media control with strong encryption. Strengths lie in its free, local-first approach and deep Linux desktop integration. Compared to Pushbullet it lacks a hosted web app and requires more initial setup, but it delivers superior privacy and zero cost for unlimited devices, making it ideal for open-source enthusiasts.