I made one for myself! It's not the most mature solution or the most fully-featured but I think it's good at what it does: https://github.com/agersant/polaris

I made one for myself! It's not the most mature solution or the most fully-featured but I think it's good at what it does: https://github.com/agersant/polaris https://github.com/agersant/polaris Android client: https://github.com/agersant/polaris-android https://github.com/agersant/polaris-android