An acronym for Rapid Environment for Audio Production, Engineering, and Recording, Reaper is a digital audio workstation and MIDI sequencer software created by Cockos. The current version is available for Microsoft Windows (XP and newer) and macOS (10.5 and newer) – beta versions are also available for Linux.^[1][2] REAPER acts as a host to most industry-standard plug-in formats (such as VST and AU) and can import all commonly used media formats, including video. REAPER and its included plug-ins are available in 32-bit and 64-bit format.  (Source: Wikipedia article; accessed 12/18/2020.)

Reaper official site. 

Max, also known as Max/MSP/Jitter, is a visual programming language for music and multimedia developed and maintained by San Francisco-based software company Cycling '74. Over its more than thirty-year history, it has been used by composers, performers, software designers, researchers, and artists to create recordings, performances, and installations.^[1]

The Max program is modular, with most routines existing as shared libraries. An application programming interface (API) allows third-party development of new routines (named external objects). Thus, Max has a large user base of programmers unaffiliated with Cycling '74 who enhance the software with commercial and non-commercial extensions to the program. Because of this extensible design, which simultaneously represents both the program's structure and its graphical user interface (GUI), Max has been described as the lingua franca for developing interactive music performance software.^[2] 

^{(Source: Wikipedia article; accessed 12/18/2020)}

MAX Cycle '74 official site.