Today during the Arduino Day live stream Arduino had a slide with the top library downloads (we had asked about this for the AMA). Here are the top 10, and a screenshot from the live video. Arduino said they would publish these shortly.

Most popular libraries (over 2,150 in IDE, over 7000 in the wild)

2019 – YtD Downloads 238,344 Adafruit_Circuit_Playground 161,727 DHT_sensor_llbrary (Adafruit) 99,450 ArduinoJson 84,872 Servo 82,894 SD 79,774 Adafruit_GFX_Library 59,342 Adafuit_NeoPixel 57,582 LiquidCrysta1_12C 55,322 MFRC522 48,414 Blynk

For Adafruit, having the top spot and 4 total in the top 10 let us know the open-source code we release and maintain is being used, thank you community and to our team for your contributions and support. Also in the listings from Adafruit…

Adafruit_SSD1306

Adafruit_Unified_Sensor

Adafruit_ESP8266

Adafruit_MQTT

Adafruit_IO_Arduino

Adafruit_BME280_Library

This is helpful and useful information for developers and the industry to see what folks are using, this only less than 3 months of data for 2019, however – there are a lot of good insights. Having this available as JSON or on a site would help out long-term as well for being able to monitor the downloads.

Here are some stats from State of Arduino on October 19, 2019.

Stats as of Dec 2, 2019.