Open Source

Software built in the open.

These are active projects exploring a simple idea: important software should be understandable, durable, and shaped with care.

Two projects. Both actively developed.

Their source, history, and direction are public from the beginning.

Engineering memory

Susumu

A local-first code workflow scanner and review portal that helps an existing software project explain itself.

Susumu connects source code, expectations, verification, decisions, work records, and Git context into portable review artifacts for engineers, stakeholders, and AI agents.

What it is built to do

  • Deterministic code evidence
  • Decision and verification records
  • Portable review portal

Open source. Actively developed. Built in Rust.

Private self-hosted mail

Litterae

An encrypted, self-hosted email system built for people who want to operate their own mail without treating privacy as an afterthought.

Litterae handles mail delivery, a modern web mailbox, and administration while keeping mailbox content structurally separate from administrative access.

What it is built to do

  • Self-hosted mail delivery
  • Encrypted mailbox content
  • Separate admin and mailbox access

Open source. Actively developed. Built in Rust.

Why build in public?

Open source makes the work inspectable. It invites better questions, sharper feedback, and a more honest relationship with the people who depend on the software.

Built for participation

There is a place here whether you use, shape, or follow the work.

People using the tools

Explore the repositories, read the documentation, and see how each project approaches a problem that matters to you.

People improving them

The source is available for questions, issues, experiments, and contributions that make the projects more useful and more trustworthy.

People following along

The repositories show the work as it evolves: the choices, tradeoffs, and the unfinished edges that come with building real software.