I'm not saying it's a fair metric, but when I compare Twitter's open output to similarly VC-funded-but-now-public companies, the engineering output doesn't seem particularly exciting.

For comparison:

Meta / Facebook:

* React

* PyTorch

* Fasttext

* Their unsung-but-indispensible-for-humanitarian-orgs Data for Good program

Google:

* Flutter

* Go

* Kubernetes

* Tensorflow

* BERT / Large language models generally

* Mapreduce / Hadoop

The much-maligned Uber:

* H3 Geospatial indexing

* Kepler.gl

* Manifold

Even AirBNB!

* Airflow

* Superset

I use most of these products (or their descendants) every day in my work. When I think of Twitter, all I think of is how they arbitrarily shut off humanitarian access to their APIs (and earlier, the Twitter firehose). There's not a single Twitter-supported open product that I use.

Am I the only one? Is there a great Twitter-supported project that I missed?