DNS Current Location Checker

Email Spoofing Countermeasures / Domain Security Check | Certadomain

From DMARC, SPF, and DKIM configuration diagnostics to phishing judgment and subdomain search. You can comprehensively check domain security all at once.

ぼくのいるところ

連絡先を知らなくても、いまここ

Regular Expression Builder & Tester

Just type a pattern and check the highlight on the spot. Regular expression checking during development without needing external sites.

PINC.

PINC ties location data to that location. In real time, your observations are being mapped. New value to all places.

Browser operation verification Web camera test

Web会議前に映りを確認しておこう

公開ナビ

AI-made sites and apps - what's still needed before launch? Diagnosis with 5 questions, free.

Character Code Detection Tool 🔍

Display the character encoding of the file.

SpeedCheckAI

You can find out the cause of your "slow" internet in about 30 seconds.

サイト改善ミニ診断

Online diagnostic report for organizing website improvement priorities for small business operators

ASCII Art Logo Generator

You can easily generate ASCII art characters using symbols on a browser. We have prepared 4 types of ASCII fonts. All fonts are original creations.

Amazon Search Ranking Check Tool | Check SEO Rankings & Ad Rankings in Bulk

Seller SEO & Ad Rank Checker is a Chrome extension for Amazon. You can bulk retrieve SEO rankings, ad rankings, and recommended badges by simply entering ASINs and keywords.

無料diffツール｜コード差分チェッカー CodeDiff Checker｜CodeQuest.work

CodeDiff Checkerは、2つのコードやテキストの差分を視覚的に確認できる無料のオンラインツールです。登録不要・インストール不要で、ブラウザだけで使えます。コードはサーバーに送信されないため

Captive Portal

Free Wi-Fi authentication screen-inspired Captive Portal Demo

nazopedia - 謎解きレビューサイト

ネタバレなしで、次に遊ぶ謎解きが見つかる。

街のプロンプト相談所

あなたにお似合いピタリと来るプロンプト探してあげる

Minor Planet Names

Tool for searching and analyzing asteroid names and their origins

twESP32GPS

An open-source GPS & NTP server running on ESP32! Visualize satellite reception status and location information in real-time with a Svelte-based web dashboard.

Font Next

Google Fontを使用したフォントロゴ生成ツールです

見た目でズバリ分かる 応答速度チェッカー

生存確認オンライン | 昔のゲーム仲間を探す

昔のオンラインゲーム仲間、今どうしてるだろう。名前を検索して、そっと見守るだけのサービスです。

サブスク整理帳｜月額・年額を一発チェック

This is a web tool that lets you easily check your monthly and annual fixed costs by simply selecting the subscriptions you're currently using. No login or membership registration required—it works right in your browser. Perfect for people who want to start by simply organizing their growing subscription payments.

テスタ - アプリ相互テストコミュニティ

Are you having trouble gathering testers for closed testing of your Android app? This is Japan's first mutual testing community where everyone can pass by testing each other.

twgps

This is a tool that visualizes GPS/QZSS satellite reception status in real-time and enables a PC to function as a Stratum 1 NTP server.

Famous Quote Generator

This is a web app that automatically generates natural and emotional quotes by combining word and grammar data. You can enjoy meeting different words each time with just a button press.