I can do many interesting things with a mixture of Cyberduck, TextMate, Navicat, and ssh.
Project management – phabricator.
I use XCode and AppCode for my iOS code.
For Android, I use Android Studio and develop on Nexus devices.
Continuous integration: jenkins.
Chat – slack.
Web frameworks – node, D3.js, elixir.
Data frameworks – numpy, pandas, spark.
Notebooks – jupyter, colab.
Machine learning – scikit, keras, tensorflow, pytorch, fastai.
mail – google apps.
dns – google domains, cloudflare.
containers – docker, kubernetes.
cloud – google cloud, amazon web services, digital ocean.
databases – SQLite, postgres, graphql.
analytics – amplitude, bigquery, colab.
mobile sdks – fabric, branch.