Apps with 'xmp' feature

ExifTool is a platform-independent Perl library plus a command-line application for reading, writing and editing meta information in a wide variety of files.

Graphical user interface to ExifTool for reading and writing metadata in images.

Diffractor unifies managing photo, video and audio files. If you centralize media on that trusty old PC; let Diffractor do the heavy lifting.

Geeqie is a free open software image viewer and organiser program for Linux, FreeBSD and other Unix-like operating systems.

Enhanced Android Gallery App to manage local photos: geotagging with map, tags (keywords), find, sort, view, copy, delete, set gps exif data, send, ... .

Edit, modify, add, delete any metadata from audio, video, photo, text.

Photos Exif Editor is a Batch photo metadata Editor to edit EXIF, IPTC & XMP metadata for thousands of photos with a single click.

Fast Video Cataloger is a professional Windows software for searching, browsing and organizing digital video files

A Static Web Media Gallery with Super-Powers.

Expose your media (pictures and videos) on the web and share them with family and friends. Publish them on a fast and secure static web site with advanced features. Ideal for self-hosting.

Automatically tag faces in photos and identify them on your local windows system, without sending data to the cloud.

Quick change of comment and author in JPEG / TIFF / RAW images, display and change (multiple files simultaneously) of EXIF, IPTC and XMP properties; Rename files by meta data; Export and comparing the properties; based on exiv2.

With HoudahGeo you may "pin" photos to locations where they were taken.

Resize, add watermarks and share your pictures with a single click.

CoolTweak is a nice tool that expands the use of right-click menus on the OS level with actions you are able to tweak to fit your needs.

With Cooltweak, you are able to right click files and folders to finish a.

This program was written because of the new Google Picasa 3.5 face recognition feature. Due to the fact that Picasa 3.5 doesn't store the face recognition data inside JPEG pictures, this program fetches that data and stores it as XMP-MP meta tags inside the JPEG pictures.

ElasticExif is a cloud service that extracts all the embedded metadata from your file and returns it as a JSON document. It supports EXIF, XMP, IPTC and many more formats. It's a cloud-hosted wrapper around the read function of ExifTool.