Rust and RISC-V both feel like they've reached critical mass and I'd guess that they'll be used more in 5 years than they are today.
What other technologies fit this description?
LLMs have been really helpful for me porting some JS projects to TS.
Since the types are erased and annotations are optional, I can go gradually and safely with more minimal human oversight.
(I'm not sure if it'll significantly help robustness, but it's lovely for navigation.)
Reviewing some of my earliest web projects: they have a mix of Postgres, MySQL and Mongo.
These days I just use sqlite for all my personal projects. It's really good at my scale and makes deploying very easier.