It's interesting watching these types of tools get re-invented periodically:
https://github.com/benbernard/RecordStream
It shows the unix model of many small, composable tools is very powerful, but also shows that POSIX is missing some essential pieces that everyone keeps trying to add/reinvent.
Lots of them out there. Here's one that repurposes the extends the standard unix tools to know about comments and column labels: https://github.com/dkogan/vnlog/