Releases on March 23rd, 2019 and before

github
open-wc/open-wc on GitHub @open-wc/testing@0.10.1 @open-wc/testing-helpers@0.8.1 @open-wc/chai-dom-equals@0.10.1 @open-wc/building-rollup@0.2.1
gitlab
bitfireAT/davx5-ose on GitLab v2.4-beta2-ose
github
open-wc/open-wc on GitHub owc-dev-server@0.3.0 @open-wc/webpack-import-meta-loader@0.2.0 @open-wc/testing@0.10.0 @open-wc/testing-karma@0.4.15 @open-wc/testing-karma-bs@0.2.16 @open-wc/testing-helpers@0.8.0 @open-wc/semantic-dom-diff@0.8.0 @open-wc/polyfills-loader@0.3.0 @open-wc/demoing-storybook@0.2.0 @open-wc/chai-dom-equals@0.10.0 @open-wc/building-webpack@1.1.0 @open-wc/building-rollup@0.2.0
Maybe you can find something interesting in this list