I still use it, shamefully, ex-Weaveworks employee - there is a fork I can recommend which has a live maintainer, actively interested in keeping it up:

https://github.com/rajch/weave/tree/reweave

If you use Weave net still, definitely follow his work and consider learning to build the image, so you can keep it ahead of CVE scanners. (You are using a CVE scanner in your clusters, right?)