Top 23 C esp-idf Projects

esp-homekit-devices

1 53 2,823 7.8 C

Advanced firmware to add native Apple HomeKit and custom configurations, compatible with any SoC based on ESP32, ESP32-S, ESP32-C and ESP8266 series. (Shelly, Sonoff, Electrodragon, Tuya...)
Nutrient

www.nutrient.io featured

Nutrient – The #1 PDF SDK Library, trusted by 10K+ developers. Other PDF SDKs promise a lot - then break. Laggy scrolling, poor mobile UX, tons of bugs, and lack of support cost you endless frustrations. Nutrient’s SDK handles billion-page workloads - so you don’t have to debug PDFs. Used by ~1 billion end users in more than 150 different countries.
willow

2 39 2,710 7.7 C

Open source, local, and self-hosted Amazon Echo/Google Home competitive Voice Assistant alternative

Project mention: Show HN: Voice-Pro – AI Voice Cloning Magic: Transform Any Voice in 15 Seconds | news.ycombinator.com | 2024-11-27
esp-idf-lib

3 7 1,484 8.8 C

Component library for ESP32-xx and ESP8266
esp32_nat_router

4 13 1,468 6.2 C

A simple NAT Router for the ESP32
BlueRetro

5 97 1,460 9.2 C

Multiplayer Bluetooth controllers adapter for retro video game consoles

Project mention: Ask HN: Those making $500/month on side projects in 2024 – Show and tell | news.ycombinator.com | 2024-12-10

I guess they forgot about it, still going ever since!
I still make 1000 USD a month from the various HW makers.
One new thing I made this year after 5 year of doing this hobby, is that I finally manufactured and sold one adapter base on this code myself for the OG Xbox console. [3]
Factoring all the expenses I made 7K for a batch of 300. I plan to do a 2nd batch next year, which should yield double that since I will only incur raw materials & shipping expenses.
It took me 48 hour of manual labor to assemble them and ship them. So it's doesn't make much sense TBH, but it's a good experience. Made me appreciate my desk job.
[1] https://github.com/darthcloud/BlueRetro
LovyanGFX

6 9 1,277 8.3 C

SPI LCD graphics library for ESP32 (ESP-IDF/ArduinoESP32) / ESP8266 (ArduinoESP8266) / SAMD51(Seeed ArduinoSAMD51)
lv_port_esp32

7 2 1,069 0.0 C

LVGL ported to ESP32 including various display and touchpad drivers
CodeRabbit

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esp-at

8 9 965 8.9 C

AT application for ESP32/ESP32-C2/ESP32-C3/ESP32-C6/ESP8266
MicroPython_ESP32_psRAM_LoBo

9 1 838 0.0 C

MicroPython for ESP32 with psRAM support
bluepad32

10 9 710 9.1 C

Bluetooth gamepad, mouse and keyboard support for ESP32 and PicoW

Project mention: Bluepad32 v4: A Bluetooth Controller for ESP32, ESP32-S3, ESP32-C3, and More | news.ycombinator.com | 2024-10-11
esp32-wifi-manager

11 2 702 0.0 C

Captive Portal for ESP32 that can connect to a saved wireless network or start an access point where you can connect to existing wifis.
esp-mqtt

12 3 637 6.2 C

ESP32 mqtt component
Homepoint

13 1 633 0.0 C

Espressif ESP32 Based Smarthome screen for MQTT
esp32free80211

14 1 491 1.8 C

Send arbitrary IEEE 802.11 frames with Espressif's ESP32
esp_ghota

15 1 434 2.9 C

esp32 OTA Component to update firmware from Github Releases
lvgl_esp32_drivers

16 1 363 0.0 C

Drivers for ESP32 to be used with LVGL
hagl

17 3 344 2.9 C

Hardware Agnostic Graphics Library for embedded
ESP32-USB-Soft-Host

18 3 307 5.0 C

An Arduino wrapper to @sdima1357's usb_soft_host esp-idf example
micro_ros_espidf_component

19 5 299 5.4 C

micro-ROS ESP32 IDF component and sample code
esp-idf-st7789

20 1 292 9.0 C

ST7789 Driver for esp-idf
esp_littlefs

21 1 277 8.2 C

LittleFS port for ESP-IDF (by joltwallet)
blackmagic-espidf

22 2 256 4.3 C

Blackmagic Wireless SWD Debug probe hosted on esp-idf SDK (for ESP8266) with UART on Telnet port and HTTP using xterm.js
ESP32-TUX

23 2 249 3.6 C

ESP32-TUX - ESP32 / ESP32-XX Touch UX Template using LVGL to get you started
SaaSHub

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SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

C esp-idf discussion

C esp-idf related posts

ESP-IDF with Arduino Examples

6 projects | dev.to | 2 Mar 2025
Bluepad32 v4: A Bluetooth Controller for ESP32, ESP32-S3, ESP32-C3, and More

1 project | news.ycombinator.com | 11 Oct 2024
Esp32Berry

1 project | /r/LilyGO | 5 Dec 2023
Any “Google Home” type solutions that work offline?

1 project | /r/smarthome | 5 Dec 2023
Open Source Smart Device

1 project | /r/TheAmpHour | 10 Nov 2023
Show HN: Willow: the fastest and most private open source voice assistant

1 project | news.ycombinator.com | 12 Oct 2023
ESP32 WiFiMulti: Connect to the Strongest Wi-Fi Network (from a listing of networks).

2 projects | /r/u_KeatonParker | 1 Oct 2023
A note from our sponsor - Nutrient
www.nutrient.io | 15 Mar 2025

Other PDF SDKs promise a lot - then break. Laggy scrolling, poor mobile UX, tons of bugs, and lack of support cost you endless frustrations. Nutrient’s SDK handles billion-page workloads - so you don’t have to debug PDFs. Used by ~1 billion end users in more than 150 different countries. Learn more →

Index

What are some of the best open-source esp-idf projects in C? This list will help you:

#	Project	Stars
1	esp-homekit-devices	2,823
2	willow	2,710
3	esp-idf-lib	1,484
4	esp32_nat_router	1,468
5	BlueRetro	1,460
6	LovyanGFX	1,277
7	lv_port_esp32	1,069
8	esp-at	965
9	MicroPython_ESP32_psRAM_LoBo	838
10	bluepad32	710
11	esp32-wifi-manager	702
12	esp-mqtt	637
13	Homepoint	633
14	esp32free80211	491
15	esp_ghota	434
16	lvgl_esp32_drivers	363
17	hagl	344
18	ESP32-USB-Soft-Host	307
19	micro_ros_espidf_component	299
20	esp-idf-st7789	292
21	esp_littlefs	277
22	blackmagic-espidf	256
23	ESP32-TUX	249