Open Tool

Independent web apps — fast, focused, and built to last.

Open Tool is a small software studio that ships practical web applications under one roof. Each product is its own subdomain — a self-contained app with a clear job to do, not a bloated platform pretending to do everything.

The collection spans everyday utilities, property and finance workflows, games, and infrastructure tools like analytics. Everything is designed for speed and clarity: minimal friction, sensible defaults, and no dark patterns. Apps are built and operated in-house, deployed on a single stack, and improved continuously based on real use.

If you need help, have feedback, or want to report a bug, visit the Support page or email admin@opentool.us.

Below are the live apps in the Open Tool family — from document utilities and landlord tools to browser games and analytics. Pick one to get started.

🧰

Tool

Everyday utilities — file helpers, converters, and the core Open Tool toolkit for quick jobs in the browser.

tool.opentool.us →🏠

Land

Landlord and property management — tenants, leases, documents, and compliance in one place.

land.opentool.us →📄

PDF

PDF editing and conversion — merge, split, annotate, and process documents without desktop software.

pdf.opentool.us →🎮

Game

Legends Reforged — a retro CRPG with turn-based strategy combat, playable in the browser.

game.opentool.us →⚽

World Cup

Predict match scores, compete on the leaderboard, and follow the tournament with friends.

worldcup.opentool.us →📊

Analytics

First-party website analytics — lightweight, privacy-friendly traffic and page insights.

analytics.opentool.us →🎰

Casino

Multiplayer Blackjack — sign in, take a seat, and play against the dealer with others at the table.

casino.opentool.us →