koval

Portfolio

Things
I've built.

Products, client work, and experiments from 7+ years of building for the web. The short version of what I do — the long one is here.

Splatty
01
Splatty

All-in-One monitoring SaaS for indie hackers

ruby rails indiehacking monitoring
3Commas
02
3Commas

Smart trading platform providing automated trading bots, portfolio management, and risk mitigation tools for cryptocurrency traders.

Ruby on Rails Fintech Trading Automation
Shopify Price Editor
03
Shopify Price Editor

Bulk price editing for Shopify merchants. Specify changes, select products with filters, and handle the rest without CSV files.

Ruby on Rails Shopify API Hotwire
Shopify Color Swatches
04
Shopify Color Swatches

Combined listings app linking related products with swatches. Products grouped manually or automatically, cached on Shopify CDN.

Ruby on Rails Shopify API Theme Extensions
Shopify Size Charts
05
Shopify Size Charts

Create and auto-assign size charts to products, collections, and tags using flexible conditions. Multiple charts per product.

Ruby on Rails Shopify API Liquid
The Insider
06
The Insider

Independent investigative media outlet. Recipient of The European Press Prize and the Free Media Award.

Ruby on Rails Media High Traffic
rubycrow
07
rubycrow

A curated weekly newsletter for Ruby & Rails developers.

Ruby Opensource
Junction
08
Junction

A browser picker that actually understands context for MacOS

macos productivity
Open-Source Libraries & Tools
sidekiq_solid_fetch

OSS implementation of Sidekiq Pro's super_fetch for reliable job processing.

Ruby
openapi_minitest

Validate API responses against OpenAPI specs in your Minitest suite.

Ruby
basecamp-mcp

Model Context Protocol server for Basecamp integration with AI tools.

Ruby
proxypool

Multifeatured proxy manager for Ruby applications.

Ruby
lightning_ui_kit

Lightning-fast UI component kit for Ruby on Rails applications.

Ruby

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