croc is a tool that allows any two computers to simply and securely transfer files and folders. AFAIK, croc is the only CLI file-transfer tool that does all of the following:

- allows any two computers to transfer data (using a relay)
- provides end-to-end encryption (using PAKE)
enables easy cross-platform transfers (Windows, Linux, Mac)
- allows multiple file transfers
- allows resuming transfers that are interrupted
- local server or port-forwarding not needed
- ipv6-first with ipv4 fallback

Terratag is a CLI tool allowing for tags or labels to be applied across an entire set of Terraform files. Terratag will apply tags or labels to any AWS, GCP and Azure resources.

High-performance load testing tool, written in Golang.

Ottr is a serverless framework for Public Key Infrastructure (PKI) that aims to provide a robust and scalable method to manage end-to-end certificate rotations using an agentless approach.

Reconstruct Open API Specifications from real-time workload traffic seamlessly.

Federation allows a Prometheus server to scrape selected time series from another Prometheus server. Prometheus federation can be used to scale to hundreds of clusters or to pull related metrics from one service’s Prometheus into another.