builder.group
builder.group

builder.group

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

Projects

Products built under builder.group, from experiments to production

Kairos
MaintenanceMar 2026

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

FocusCat
FocusCat
MaintenanceJan 2026

macOS pomodoro timer with a cat companion and app blocking

Derive
MaintenanceJan 2026

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

Tapling
Tapling
MaintenanceDec 2025

iOS keyboard extension with a Bongo Cat tapping as you type

Isshin
Isshin
PausedNov 2025

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

๐Ÿ‘€
GazeGames[๐Ÿงช]
CompletedNov 2025

Generates image sets where person gazes at a moving target

โœจ
LearnLinesFaster[๐Ÿงช]
MaintenanceOct 2025

Line-learning tool using the first-letter method

โœจ
ActorPal
DiscontinuedOct 2025

Tools for actor line learning, scene practice, and auditions

Tasu
Tasu
DiscontinuedAug 2025

Open-source, video-first customer support tool

Saku
Saku
MaintenanceJun 2025

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

Saku v1
Saku v1
PivotedJan 2025

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

Sub.Me
Sub.Me
PivotedNov 2024

Community and payment platform for creators

๐Ÿ“ฆ
Open Box
DiscontinuedOct 2024

Shopify app for deferred shipping and bulk order bundling

NoDox
NoDox
MaintenanceSep 2024

Chrome extension that blurs sensitive data on webpages

ChatSnap
ChatSnap
DiscontinuedSep 2024

Automated channel generating chat-conversation videos

MidiMarble
MidiMarble
DiscontinuedSep 2024

Automated channel generating marble music videos

Shortify
Shortify
DiscontinuedSep 2024

AI tool to automate short-form video content creation

EU Blocks
EU Blocks
DiscontinuedJul 2024

Shopify app with GDPR and EU energy label compliant UI blocks

Packages

TypeScript libraries in the community monorepo

@blgc/utils
โ†“ 408.9k

Typesafe, tree-shakable collection of utility functions

validation-adapter
โ†“ 361.2k

Universal adapter interface for Zod, Valibot, and Yup

@blgc/types
โ†“ 305.4k

Shared TypeScript types across builder.group packages

validation-adapters
โ†“ 265.4k

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

openapi-ts-router
โ†“ 250.4k

Typesafe OpenAPI router wrapper for Express and Hono

@blgc/config
โ†“ 59.7k

Collection of ESLint, Vite, and TypeScript configurations

feature-fetch
โ†“ 49.1k

Typesafe fetch wrapper with OpenAPI type support

tuple-result
โ†“ 23.6k

Minimal, tree-shakable Result type library for TypeScript

feature-react
โ†“ 5.3k

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

feature-state
โ†“ 5.3k

Typesafe, feature-based state management library for React

feature-form
โ†“ 4.4k

Straightforward, typesafe, and feature-based form library

validatenv
โ†“ 4.3k

Typesafe env variable validation with Zod, Valibot, and Yup

xml-tokenizer
โ†“ 4.1k

Typesafe XML tokenizer with callback-based token streaming

rollup-presets
โ†“ 3.2k

Opinionated, production-ready Rollup configuration presets

feature-logger
โ†“ 3.0k

Straightforward, typesafe, and feature-based logging library

eprel-client
โ†“ 2.0k

Typesafe fetch client for the EU EPREL energy label API

ecsify
โ†“ 1.6k

Typesafe Entity Component System (ECS) library for TypeScript

head-metadata
โ†“ 1.0k

Typesafe utility to extract metadata from an HTML <head>

Built in Europe ๐Ÿ‡ช๐Ÿ‡บ|by @bennobuilder|hello@builder.group