CleanMyMac X is an user friendly Mac app that comes with a stylish design and helps you detect the junk files, but also user and system cache / log files, broken preferences or login items, apps that have universal binaries (you can remove the executable that is not suitable for your architecture), language files (you can keep only the one you actually employ).

n-Track Studio 10 Suite provides musicians and producers with a complete DAW environment for recording, editing, and mixing with an easy workflow and audio resolution up to 24-bit / 192 kHz. It supports an unlimited number of audio and MIDI tracks, as well as plug-ins including VST, VST3, DirectX, AU, and ReWire.

Viscosity is an OpenVPN client for Mac, providing a rich Cocoa user interface for creating, editing, and controlling VPN connections. Viscosity provides a complete OpenVPN solution for macOS, and does not require any additional downloads or software.