- 2018 Photo A Day Challenge
- 2019 Photo a Day Challenge
- 2024/366 Photos
- Buddhism - practice and philosophy
- Classic GM Luxury Cars 19?? - 2000
- Coalition for Change / 62% Majority / Make Parliament Work
- EduCamp Colombia
- Educational Bloggers
- Field Guide: Birds of the World
- Flickr Heroes
- Ketzel Levine's Talking Plants: An NPR Flickr Group
- New 366 Project 2024
- PARKS GARDENS AND WOODS
- Spectacular Landscapes-invited images only :-)
- Ubiquitous photos of famous places
- World Photography Day Contest 2023
- Your Best Shot 2017
- Your Best Shot 2019
- Your Best Shot 2020
- Your Best Shot 2021
- Your Best Shot 2023