Identify anything. pyWhat easily lets you identify emails, IP addresses, and more. Feed it a .pcap file or some text and it'll tell you what it is!
Digikey's choose-your-own-adventure subsite for identifying connectors.
PyCameraServer is a Flask video / image / Youtube / IP Camera frames online web-editor with live streaming preview for objects recognition, extraction, segmentation, resolution upscaling, styling, colorization, interpolation, using OpenCV with neural network models: YOLO, Mask R-CNN, Caffe, DAIN, EDSR, LapSRN, FSRCNN, ESRGAN.
CUDA enabled.
A port of Google's language detection library from Java to Python.
A wiki page that documents explanations for and origins of various types of radio broadcasts people picked up with software defined radios and analyzed with software like GQRX.