Provide clarity on free/academic-free/paid and also open/closed source.

Open source

• GNU
  • OpenCoarrays
• LLVM Flang
• Current Flang
• LFortran

Commerical

• Intel OneAPI
• NAG
• NVIDIA
• HPE/Cray
• IBM XL
• AMD AOCC
• ARM
• Oracle/Sun
• Silverfrost FTN95
• NEC
• LCC