xmp topic
exiv2
Image metadata library and tools
pyexiv2
Read and write image metadata, including EXIF, IPTC, XMP, ICC Profile.
Photini
An easy to use digital photograph metadata (Exif, IPTC, XMP) editing application.
xmp-core-dotnet
.NET library for working with the Extensible Metadata Platform (XMP)
TinyEXIF
Tiny ISO-compliant C++ EXIF and XMP parsing library for JPEG.
naturtag
Tag your nature photos with iNat taxonomy and observation metadata
xIFr
Exif viewer WebExtension for Firefox and compatible webbrowsers
exempi
Exempi: XMP SDK (freedesktop mirror)
multi_exiftool
This library is my new approach of a wrapper for the Exiftool command-line application (https://exiftool.org) written by Phil Harvey. The intention is to have a performanter library than mini_exiftool...