Releases on May 23rd, 2020 and before

dockerhub
bitnami/redis on Docker Hub 5.0.9-debian-10-r27
github
microsoft/lage on GitHub lage_v0.5.0
github
bup/bup on GitHub 0.30.1
github
xwmx/nb on GitHub 4.1.5
github
triplea-game/triplea on GitHub 2.0.19499 2.0.19497
github
linuxserver/docker-qbittorrent on GitHub 4.3.0202005231833-6992-35a3265ubuntu18.04.1-ls37
dockerhub
linuxserver/qbittorrent on Docker Hub 4.3.0202005231833-6992-35a3265ubuntu18.04.1-ls37 arm64v8-4.3.0202005231833-6992-35a3265ubuntu18.04.1-ls37 arm32v7-4.3.0202005231833-6992-35a3265ubuntu18.04.1-ls37 amd64-4.3.0202005231833-6992-35a3265ubuntu18.04.1-ls37
dockerhub
bitnami/mysql on Docker Hub 8.0.20-debian-10-r25
github
dimagi/commcare-hq on GitHub 2020-05-24_12.28-icds-staging-setup_release 2020-05-24_12.28-icds-staging-deploy
Maybe you can find something interesting in this list