builder.group

An indie software studio shipping products and open-source tools in public.

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Projects

Products built under builder.group, from experiments to production

Abstand

In ProgressApr 2026

Desktop app for building intentional distance from distractions

Website GitHub

Kairos[🧪]

MaintenanceMar 2026

iOS timer app that picks a random finish within a set range

App Store GitHub

FocusCat

MaintenanceJan 2026

macOS pomodoro timer with a cat companion and app blocking

Website App Store GitHub

Derive[🧪]

MaintenanceJan 2026

iPhone app: pick a color, find 9 things, fill a 3×3 photo grid

App Store GitHub

Tapling

MaintenanceDec 2025

iOS keyboard extension with a Bongo Cat tapping as you type

App Store GitHub

Isshin

PausedNov 2025

macOS app that auto-adapts app blockers to your daily task plan

Website

👀

GazeGames[🧪]

CompletedNov 2025

Generates image sets where person gazes at a moving target

Website GitHub

✨

LearnLinesFaster[🧪]

MaintenanceOct 2025

Line-learning tool using the first-letter method

Website GitHub

✨

ActorPal

DiscontinuedOct 2025

Tools for actor line learning, scene practice, and auditions

Tasu

DiscontinuedAug 2025

Video-first customer support tool

Saku

MaintenanceJun 2025

Free Shopify link-in-bio page hosted on your store domain

Shopify GitHub

Saku v1

PivotedJan 2025

Open-source page builder for creators on Bluesky / AT Protocol

Website GitHub

Sub.Me

PivotedNov 2024

Community and payment platform for creators

📦

Open Box

DiscontinuedOct 2024

Shopify app for deferred shipping and bulk order bundling

NoDox

MaintenanceSep 2024

Chrome extension that blurs sensitive data on webpages

Chrome Store GitHub

ChatSnap

DiscontinuedSep 2024

Automated channel generating chat-conversation videos

YouTube

MidiMarble

DiscontinuedSep 2024

Automated channel generating marble music videos

YouTube

Shortify

DiscontinuedSep 2024

AI tool to automate short-form video content creation

EU Blocks

DiscontinuedJul 2024

Shopify app with GDPR and EU energy label compliant UI blocks

Packages

Open-source libraries and developer tools in the community monorepo

@blgc/utils

↓ 481.5k

npm GitHub

Typesafe, tree-shakable collection of utility functions

validation-adapter

↓ 419.8k

npm GitHub

Universal adapter interface for Zod, Valibot, and Yup

@blgc/types

↓ 362.4k

npm GitHub

Shared TypeScript types across builder.group packages

validation-adapters

↓ 307.0k

npm GitHub

Pre-built adapters for validation-adapter: Zod and Valibot

openapi-ts-router

↓ 293.0k

npm GitHub

Typesafe OpenAPI router wrapper for Express and Hono

@blgc/config

↓ 67.8k

npm GitHub

Collection of ESLint, Vite, and TypeScript configurations

feature-fetch

↓ 62.8k

npm GitHub

Typesafe fetch wrapper with OpenAPI type support

tuple-result

↓ 38.7k

npm GitHub

Minimal, tree-shakable Result type library for TypeScript

feature-react

↓ 5.5k

npm GitHub

React hooks and components for feature-state and feature-form

feature-state

↓ 5.4k

npm GitHub

Typesafe, feature-based state management library for React

feature-form

↓ 4.6k

npm GitHub

Straightforward, typesafe, and feature-based form library

validatenv

↓ 4.6k

npm GitHub

Typesafe env variable validation with Zod, Valibot, and Yup

xml-tokenizer

↓ 4.4k

npm GitHub

Typesafe XML tokenizer with callback-based token streaming

rollup-presets

↓ 3.7k

npm GitHub

Opinionated, production-ready Rollup configuration presets

feature-logger

↓ 3.1k

npm GitHub

Straightforward, typesafe, and feature-based logging library

eprel-client

↓ 2.1k

npm GitHub

Typesafe fetch client for the EU EPREL energy label API

ecsify

↓ 1.9k

npm GitHub

Typesafe Entity Component System (ECS) library for TypeScript

head-metadata

↓ 1.2k

npm GitHub

Typesafe utility to extract metadata from an HTML <head>

split-flap-board

↓ 609

npm GitHub

Web component that simulates a split-flap display inspired by airport and train station boards

mado

crate GitHub

A macOS-focused Rust library for active window monitoring and app metadata

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