Releases on March 28th, 2021 and before

dockerhub
hotio/readarr on Docker Hub nightly-79d1c90-252-linux-arm-v7 nightly-79d1c90-252-linux-amd64 nightly-79d1c90-252-linux-arm64
dockerhub
parity/polkadot on Docker Hub master-0.8.30-3b4a1f47-fa841b72
github
ccxt/ccxt on GitHub 1.45.25
dockerhub
hotio/readarr on Docker Hub pr-053baf8 pr-retagging-0.1.0.553 pr-053baf8-251-linux-arm64 pr-053baf8-251-linux-arm-v7 pr-053baf8-251-linux-amd64
dockerhub
parity/polkadot on Docker Hub master-0.8.30-d23a6d5a-a4b21f76
dockerhub
hotio/jackett on Docker Hub release-57bdb64 release-0.17.797 release-57bdb64-540-linux-arm64 release-57bdb64-540-linux-arm-v7 release-57bdb64-540-linux-amd64
github
ccxt/ccxt on GitHub 1.45.24
npm
fomantic-ui on Node.js NPM 2.8.8-beta.198
github
ccxt/ccxt on GitHub 1.45.23
dockerhub
linuxserver/ombi on Docker Hub development-version-v4.0.1290 development-v4.0.1290-ls80 arm64v8-development-version-v4.0.1290 arm32v7-development-version-v4.0.1290 amd64-development-version-v4.0.1290 arm64v8-development-v4.0.1290-ls80 arm32v7-development-v4.0.1290-ls80 amd64-development-v4.0.1290-ls80
Maybe you can find something interesting in this list