The single board computer (SBC) market is a rapidly growing industry, with a wide range of companies offering products for various applications. Here are some of the key players and their competitive landscape in the SBC market:

1. Raspberry Pi: Raspberry Pi is one of the most popular and widely used SBCs in the market. They offer a range of models, from the low-cost Raspberry Pi Zero to the more powerful Raspberry Pi 4. Raspberry Pi has a strong community of users and developers, which contributes to its popularity.

2. NVIDIA: NVIDIA is a well-known name in the computer hardware industry, and they offer a range of SBCs for different applications. Their Jetson platform is popular in robotics and artificial intelligence applications.

3. BeagleBoard: BeagleBoard is another popular SBC manufacturer, offering a range of products for different applications. Their products are often used in industrial automation and robotics.

4. Intel: Intel is a major player in the computer hardware industry, and they offer a range of SBCs for various applications. Their UP board is popular in the maker community and for IoT applications.

5. Asus: Asus is a well-known name in the computer hardware industry, and they offer a range of SBCs for different applications. Their Tinker Board is popular in the maker community and for media center applications.

6. ODROID: ODROID is a South Korean company that offers a range of SBCs for different applications. Their products are often used in robotics and gaming applications.

7. Hardkernel: Hardkernel is another South Korean company that offers a range of SBCs for different applications. Their products are often used in industrial automation and robotics.

8. Advantech: Advantech is a Taiwan-based company that offers a range of SBCs for industrial applications. Their products are often used in automation, transportation, and healthcare industries.

9. UDOO: UDOO is an Italian company that offers a range of SBCs for various applications. Their products are often used in educational and robotics applications.

10. Gumstix: Gumstix is a California-based company that offers a range of SBCs for various applications. Their products are often used in IoT and robotics applications.

In conclusion, the single board computer market is highly competitive, with a range of companies offering products for various applications. Raspberry Pi, NVIDIA, and BeagleBoard are some of the most popular and widely used SBC manufacturers, while companies like Asus, ODROID, and UDOO cater to the maker community. Companies like Advantech and Gumstix offer SBCs for industrial and IoT applications. As the market continues to grow, we can expect to see even more companies entering the space and competing for market share.