What companies actually run.
Weekly teardowns of real company stacks — the tools, the tradeoffs, the migrations — documented from evidence, not vendor press releases.
// the stack database
Every entry sourced and confidence-labeled.
// latest teardowns
- What Linear actually runs
The most opinionated product in project management runs a deliberately boring stack — TypeScript, Postgres, GCP — except for the one thing they built before almost anything else: the sync engine.
- What Cursor actually runs
A $500M-ARR product built by ~50 engineers on a TypeScript monolith, a Rust orchestrator named Anyrun, and a database migration executed mid-outage.
- What TheTechStack actually runs
A publication about real stacks should show its own. Here's ours: one human, four AI agents, zero client-side JavaScript, and a database that lives in git.