Following is the list of technologies I’m Impressed by, a completely subjective metric. Since I’m not impressed often, these deserve to be listed.

In arbitrary order:

1. JetBrains IDEs. The thorough understanding of the code is top notch.
2. Vim. Amazing productivity when editing text.
3. Linux. No explanation required 🙂
4. FHIR. Very well thought through data exchange standard for healthcare. Extensible everywhere. Profiles to mandate constraints.
5. AWS CDK. Amazing productivity gain over CloudFormation due to semantic involvement of the tool. It’s about expressing what you want to achieve, not assembling the solution from what you have.

Hope you have found something new to you in this list. In this case, I recommend taking a look at it.