RawTherapee

The packaged version is not compiled with multithreading enabled.
- Better compile it form source

Compile from Source

Clone repository https://github.com/Beep6581/RawTherapee
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE="release" -DCACHE_NAME_SUFFIX="5-dev" -DPROC_TARGET_NUMBER="6" -DBUILD_BUNDLE="ON" -DBUNDLE_BASE_INSTALL_DIR="$HOME/Documents/Programs/RawTherapee" -DOPTION_OMP="ON" -DWITH_LTO="ON" -DWITH_PROF="OFF" -DWITH_SAN="OFF" -DWITH_SYSTEM_KLT="OFF" -DWITH_BENCHMARK="OFF" -DENABLE_TCMALLOC="OFF" ..
- Optimized for i7, otherwise use -DPROC_TARGET_NUMBER="2" for non-i7 CPUs
- Installs it to a local directory
make -j 7
make install