Based on our record, esp32 should be more popular than Odroid. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Esp32.net has a bunch of additional references, projects, and places to gather information. Source: almost 4 years ago
Closest thing is the ESP32 from Espressif Systems See ESP32 link for details. Since you specifically asked for open source, so some tinkering and compile is required. Source: almost 4 years ago
There's also many more dev boards, chips and modules listed here, though they may not necessarily have platformio IDs. Source: about 4 years ago
In the absence of PC Engines (RIP) Swiss design made in Taiwan, there is the South Korean ODROID from https://hardkernel.com. Compulab in Israel has some customizable IoT boards, https://www.compulab.com/products/sbcs/sbc-iot-imx8-nxp-i-mx8m-mini-internet-of-things-single-board-computer/. - Source: Hacker News / about 1 month ago
If you are not so concerned about the pinouts, the ODROIDs are excellent and generally in stock if you buy them from hardkernel.com. They are similar prices but a bit more powerful, although some (such as the M1) are quite big. I ended up buying some ODROIDs as alternatives and they worked out ok where I didn't need a Pi camera or hat. In the future I'll probably move more towards ODROIDs because of the power and... Source: over 2 years ago
Intel NUC boards - Four-by-four inch Intel NUC boards come with a soldered-on processor.
Orange Pi - It’s an open-source single-board computer. It can run Android 4.
Intel NUC - Intel NUCs are available as Kits(Barebones), Boards(Mainbaord only) and as perconfigured Mini-PCs.
Raspberry Pi - The Raspberry Pi is a tiny and affordable computer that you can use to learn programming through fun, practical projects. Join the global Raspberry Pi community.
ESPRESSObin - Electronics, Single Board Computer, and x86
Banana Pi - Banana Pi is a single-board computer made in China. It can run Android, Ubuntu and Debian.