Open Source

Tools shaped by real production needs.

A curated collection of high-performance open-source utilities maintained by Finite Field, K.K. Each project is built for simplicity, speed, and a better developer experience.

GitHub Contact

Featured OSS

Small, focused libraries that remove friction from production systems and developer tooling.

Dart package

miniriverpod

A reimplementation of Riverpod for educational purposes and lightweight state management. Focused on core principles without the bloat, making it ideal for smaller applications or embedded systems.

Learn more GitHub

Dart package

declarative_nav

Declarative navigation and screen-local overlays for Flutter. Drive Navigator 2.0 pages without push/pop or global dialog state.

Learn more GitHub

Multi libraries

mask-pii

A multi-language masking library suite for emails and phone numbers, with implementation guides for each runtime.

Learn more

Rust CLI

ironframe

A Rust-based CLI toolchain that prototypes Tailwind CSS v4.1-equivalent behavior with scanner, generator, and config crates.

Learn more GitHub

Rust crate

browser-tester

A deterministic browser-like testing crate written entirely in Rust. Validate DOM and event behavior without an external browser or WebDriver.

Learn more GitHub

Rust v0.1.0

go_html_template

A Rust crate that provides Go html/template-like API and behavior with context-aware escaping and unsafe URL blocking, without a Go runtime.

Learn more GitHub

Looking for something specific? Let us know and we will share our roadmap.