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We turn ideas into working software

A small, senior team that builds secure and scalable systems. From early prototypes to production-grade products, we work alongside founders and teams who need a real technical partner.

Let's talk What we do
5+ Years shipping
5 Own products
3 Continents
What we do

From idea to shipped product

We help founders and teams turn ideas into real, working products. From early-stage prototyping to scalable system design, we guide every step.

Product Strategy

Shaping ideas into actionable plans with the right technical vision.

Architecture & Systems Design

Building robust, scalable, and future-proof foundations.

End-to-End Development

Full-cycle product development: backend, frontend, desktop, and mobile.

Technical Co-Founding

Your hands-on tech partner, not just a service provider.

Launch & Beyond

Supporting product launches, scaling, and ongoing iteration.

We're not just coders — we build with you, think with you, and ship with you.

Our Products

Things we've built

We don't just build for clients. We build tools we believe in — software that scratches our own itch and solves real problems.

EEditor

macOS / iOS / iPadOS

A native text editor and personal information manager with a built-in Lisp database. Syntax highlighting for 24+ languages, task management inspired by Lotus Agenda, and executable code blocks — all running locally on Apple devices.

Swift SwiftUI SQLite Open Source

EELisp

Embeddable language

A Lisp interpreter for personal data management. 80+ built-in functions, SQLite-backed database engine, agenda system with natural language parsing, and automation — all in one language. Inspired by dBASE III and Lotus Agenda.

Swift Lisp SQLite

Qvault

Desktop

Automatic PII detection and redaction for legal professionals. Scans documents for sensitive information using local-only processing — zero data leaves your machine. Supports PDF and DOCX with full audit trails.

Privacy Legal Tech Local-first

Mining Dashboard

Web

Real-time monitoring and analytics for Bitcoin mining operations. Hashrate tracking, profitability analysis, and operational insights in a clean, single-pane dashboard.

Bitcoin Analytics Real-time

Finance Tracker

Desktop (Tauri)

A lightweight, local-first personal finance tracker. Built with Tauri for cross-platform desktop use — your financial data stays on your device, always.

Tauri Rust Local-first

BIP300 / Drivechain

Bitcoin protocol

Contributing to the Drivechain ecosystem — BIP300 (Hashrate Escrows) and BIP301 (Blind Merged Mining) enable a new class of Bitcoin sidechains secured by the existing hashrate, without new tokens.

Bitcoin Sidechains BIP300/301
Who we work with

Clients & Projects

Layer Two Labs

Bitcoin scaling through Drivechain sidechains (BIP 300/301).

Core development & systems architecture

CS Digital

High-performance computing for AI, research, and finance.

Tech advisory & software development

Preserva Land

Environmental compensation platform for native forest conservation.

Platform development & smart contracts

Imbued

Digital art platform blending creative expression with technology.

Mobile apps, PrivateGPT & distributed storage
From the workshop

Writing & Thinking

Notes on building software, the tools we use, and the ideas that drive our work.

April 2026 Engineering

How We Built a Mobile Image Editor in 4 Hours (And Unblocked an Entire App)

Sometimes the hardest part of building software isn't the code — it's the waiting. Ditching vendor evaluations, beating writer's block of code with two AI chat windows, and shipping in an afternoon.
March 2026 Essay

Building EEditor: How AI Brought an Old Programmer Back to Shipping

On the inspiration behind EEditor, using Claude Code and AI tools to turn years of scattered ideas into a real product, and why this era feels different for builders who've been away from the keyboard.
March 2026 Technical

Understanding BIP300 & BIP301: Bitcoin Sidechains Without New Tokens

A practical walkthrough of Drivechain — how Hashrate Escrows and Blind Merged Mining work, why they matter for Bitcoin's future, and what we've learned building in this space.
March 2026 Technical

The Architecture Behind Qvault

Why your documents never leave your machine — a deep dive into local-first PII detection and redaction, built on Tauri and Rust.
March 2026 Essay

You Can't Make a Good Deal With a Bad Person

On Warren Buffett's simplest negotiation rule, why it maps perfectly to Nash equilibrium and the Harvard model, and what game theory teaches about deals that hold.
March 2026 Engineering Culture

Keeping Fun in the House

How LLMs and code are rekindling the joy that Fred Brooks warned us we were losing — and why we're chasing it.
March 2026 Engineering

How We Built FinanceTracker

From a weekend Flask hack to a native Tauri desktop app — an open-source, local-first personal finance tracker with keyboard-driven workflows.

Let's talk

Have a project in mind? We'd love to hear from you.

info@santacroce.xyz GitHub