Reaper

Founder Justin Frankel—creator of Winamp—engineered it for efficiency, running on hardware with just 2 GB RAM and a 1 GHz CPU, making it lighter than any rival. It supports 5,120 tracks and 64-bit audio at any sample rate, with a scripting engine (EEL2/Lua/Python) for automating nearly anything—over 800 community extensions exist. Podcasters favor its ultra-low latency of 0.7 ms with ASIO drivers, while game audio designers use its flexible routing for over 500 simultaneous channels. The fully functional 60-day trial has no nag screens, and version 7 added spectral editing—a feature missing from Cubase. Despite a steep learning curve, its 4.8-star user rating on forums reflects efficiency-focused adopters.