flowctl

Flowctl is a command line tool that pulls billing and usage data from cloud providers and presents it in a readable format right in your terminal. It supports AWS, Azure, and GCP out of the box, letting you check costs without logging into a web console. The tool uses each provider's official APIs to grab current and historical usage.

You can run flowctl with simple commands like 'flowctl aws' or 'flowctl azure' to see a summary of your spending. It supports filtering by service, region, or time range. The output is plain text or JSON, making it easy to pipe into other scripts. The tool is written in Go and compiled into a single binary with no runtime dependencies.

Flowctl is open source under the MIT license. It is built by cvhariharan and is best suited for developers and sysadmins who want a quick terminal-based view of their cloud bills. It does not store your credentials locally, instead relying on your existing cloud SDK configurations.