What are some alternatives?
When comparing Raindrop and Cumulus, you can also consider the following products
Atavi - Your bookmarks are always close at hand!
ManageEngine OpManager - ZOHO Corporation offers online business, network, and IT infrastructure management applications, and software maintenance and support services.
Auryo - Unofficial multiplatform SoundCloud® app for your desktop
Cisco ACI - Application Centric Infrastructure (ACI) simplifies, optimizes, and accelerates the application deployment lifecycle in next-generation data centers and clouds.
SoundNode - SoundCloud desktop app (OS X, Windows, Linux)
H3C - Data Center Networking