Hacker News Insights research
Hacker News in 2015
The strongest tracked Hacker News title themes in 2015, with annual shares and historical context.
Data through 2026-07-13
This page ranks the tracked topics by their share of retained Hacker News story titles in 2015. It is a full calendar year; topic patterns can overlap and the list is not a taxonomy of every story.
| Rank | Topic | Category | Title share |
|---|---|---|---|
| 1 | Startups | Meta | 2.347% |
| 2 | Security | Crypto & privacy | 1.124% |
| 3 | JavaScript | Languages | 0.972% |
| 4 | Bitcoin / crypto | Crypto & privacy | 0.923% |
| 5 | Open source | Meta | 0.909% |
| 6 | Python | Languages | 0.779% |
| 7 | Linux | Infra | 0.577% |
| 8 | Docker | Infra | 0.575% |
| 9 | React | Web | 0.552% |
| 10 | Privacy | Crypto & privacy | 0.530% |
| 11 | AI / LLM | AI | 0.474% |
| 12 | Rust | Languages | 0.203% |
Context markers
- 2015-05 — Rust 1.0: Rust 1.0 ships 2015-05-15.
- 2015-11 — TensorFlow open-sourced: Google releases TensorFlow 2015-11; deep learning tooling democratizes.
Method
Every percentage uses that year's retained story-title count as its denominator. Visit the Attention Lab for 2015 or read the methodology.