If you want actual hardware you can get: - Kendryte KD233 - HiFive1 (https://www.sifive.com/boards https://www.sifive.com/boards) - GAPUINO GAP8 (https://gre

If you want actual hardware you can get: - Kendryte KD233 - HiFive1 (https://www.sifive.com/boards https://www.sifive.com/boards) - GAPUINO GAP8 (https://greenwaves-technologies.com/product/gapduino/ https://greenwaves-technologies.com/product/gapduino/) - HiFive Unleashed (https://www.sifive.com/boards/hifive-unleashed https://www.sifive.com/boards/hifive-unleashed) Those are the only ones that exist commercially as far as I know.