RararuLab
Map the friction
Start from repetitive work that can be automated with a clear command boundary.
Independent Product Lab
We turn rough ideas into shipping Rust tools.
RararuLab builds terminal-first software and AI agents with one goal: useful in real work, not just impressive in demos.
- 4 live OSS projects
- Rust + AI single stack mindset
- CLI first automation-ready output
- Rust Systems Engineering
- Agent Workflows
- Terminal UX
- Automation-First Design
Flagship Products
Small surface, high leverage.
01
Rara
Proactive AI agent with tape memory, ready for terminal, web, and chat operations.
02
Rara Trading
Closed-loop trading workflow that researches, executes, and continuously adapts.
03
Tenki
CLI workflow for job search with fit scoring, application tracking, and resume tailoring.
04
Kotoba
Terminal-native Japanese learning with SRS review, TTS listening, and voice training.
Build Loop
How a concept becomes a product.
Ship the narrow core
Release a small, usable path first, then expand only where usage pressure is real.
Tighten feedback cycles
Use issues and telemetry to fold lessons back into faster and safer iterations.
Why teams watch this lab
Practical by default.
- Every tool is open-source and inspectable.
- Interface design starts in the terminal, then fans out.
- Agent behavior is grounded in reproducible workflows.
If it can be automated, we want it shippable.
Browse the code, open an issue, or fork a tool into your own stack.