79 open source ESP32 boards
Espressif's Wi-Fi and Bluetooth microcontrollers — bare chips and WROOM/WROVER modules, S2, S3, C3 and C6. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.
ESP32ChrisBox
TUDA-MUST
78 × 46.3 mm177 parts4LCC-BY-4.06
ESP32Esp32-c3-iot sensor board
Ans1S
35.4 × 21.6 mm57 parts4LMIT6
ESP32KlokTHREEjr
wyolum
162.6 × 194.3 mm273 parts2LNo license5
ESP32Esp
0Zane
100 × 80 mm82 parts2LMIT5- schematic only · 27 partsESP32
Hub75 controller final
neusse
27 parts2LAGPL-3.05 
ESP32SensactHs
klaus-liebler
100 × 86.5 mm317 parts2LApache-2.04
ESP32Esp32-emu turbo
pjcau
160 × 75 mm102 parts4LNo license4
ESP32Board
dshills
120 × 80 mm17 parts2LMIT4- schematic only · 2 partsESP32
Architon cli
badimirzai
2 partsAGPL-3.04 
ESP32Controller
StuckAtPrototype
29 × 74 mm58 parts4LApache-2.03.8k
ESP32Aero-Hand-Open-Right
Chestnut-Robotics
40.8 × 43 mm23 parts2LCustom license971
ESP32Kv4p HT
VanceVagell
80 × 47 mm87 parts4LGPL-3.0814
ESP32SmartSPin2k
doudar
189.5 × 204.9 mm79 parts2LGPL-2.0283
ESP32Lsa
SRA-VJTI
61.9 × 24.2 mm16 parts2LMIT80
ESP32Test rig
tombueng
198.4 × 79.5 mm13 parts2LNo license78
ESP32NextTRS
apuder
145.7 × 107.8 mm93 parts2LGPL-3.074
ESP32RC14
AgOpenGPS-Official
145 × 108 mm88 parts2LGPL-3.020
ESP32Liger v0.2
physiii
36 × 63 mm84 parts4LNo license13
ESP32ESP32PIX
computergeek1507
84.8 × 88.1 mm38 parts2LCERN-OHL-1.210
ESP32Leshy2 LESHY2-UI-R2 R2 exact placement
anton-vinogradov
80 × 150 mm430 parts6LMIT5
ESP32KlokTHREEjr
161.3 × 40.6 mm70 parts2LNo license5- schematic only · 25 partsESP32
Hub75 esp32s3 controller
25 parts2LAGPL-3.05 
ESP32SensactHsIO5
90 × 67.5 mm213 parts2LApache-2.04
ESP32Esp32 minimal
atopile
36.2 × 26.8 mm20 parts2LMIT4.0k
ESP32Kv4p HT
81.2 × 96.6 mm70 parts4LGPL-3.0814
ESP3232bit
bread-modular
30.5 × 68.6 mm62 parts4LMIT65
ESP32Masthead Controller
Tuskar-Marine
150 × 83 mm209 parts4LNo license6
ESP32SensactHsIO4
90 × 74.6 mm196 parts2LApache-2.04
ESP32SensactHsIO3
90 × 53 mm187 parts2LApache-2.04
ESP32TRSIO
93.3 × 80.6 mm33 parts2LGPL-3.074
ESP32Simple carrier board (CP2104)
martinroger
76 × 56 mm9 parts2LMIT22
ESP32SensactUp4
70 × 70 mm145 parts2LApache-2.04
ESP32ESP32-CAM Controller
61.8 × 86 mm20 parts2LCERN-OHL-1.210
ESP32N2K Transceiver
60 × 75 mm68 parts4LNo license6
ESP32SensactOutdoor
100 × 91.6 mm129 parts2LApache-2.04
ESP32SensactHsNano2
90 × 56.5 mm128 parts2LApache-2.04