Web Development

A web app that calculates Indian GST (Goods and Services Tax) rates and retrieves business information via GSTIN number. It's an essential daily tool for Indian business operators.

A service that validates Brazilian individual taxpayer numbers (CPF) and business registration numbers (CNPJ) and retrieves public information. It can be sold as an API to companies doing business in Brazil.

A no-code platform for creating and managing Telegram bots on the web. Telegram dominates usage in Russia, Eastern Europe, and the Middle East, making it ideal for services targeting those markets.

A service for adding a bot to a Discord server and configuring commands, auto-responses, and role assignments through a web dashboard. There is real demand for community management tools.

A Notion-style note app with a block-based editor for writing pages, supporting nested pages and database views. Slash commands and drag-and-drop are the core features.

A dashboard that analyzes rapidly growing repositories by language or topic on GitHub and visualizes trends. Developers can use it to stay on top of emerging technology trends.

A community where users can post worries anonymously without logging in, and others respond with empathy and comments. It's designed to be completely anonymous while still preventing spam.

A tool that uses AI to draft SEO-optimized blog posts from keywords and outlines. You can deliver a real-time writing experience through streaming.

A service where AI summarizes Korean legal statutes in plain language and answers questions about specific provisions. It can help ordinary citizens understand the law.

A dashboard that fetches real-time stock prices when you enter your holdings and shows return rate and portfolio composition charts. It can be used for both investment learning and practice.

A crowdfunding site where you post ideas and gather supporters. The core is the conditional payment logic where payment is processed when the target amount is reached.

A service that automatically generates a beautiful portfolio site when developers input their projects, tech stack, and career history. Supporting various themes makes it a differentiating point.

A service that displays apartment and officetel listings on a map and filters and compares them by price per square meter, school district, and transportation. It's a realistic project combining public data and map APIs.

A collaboration tool where multiple people can draw and post sticky notes simultaneously. It's a FigJam-style whiteboard that can be used for brainstorming or meetings.

A tool where AI analyzes keywords, strengths, and areas for improvement when you upload a resume PDF. It's a practical service for job seekers that can also be monetized with a subscription model.

A community for uploading cooking recipes and leaving comments and ratings. Supporting ingredient search and dietary restriction filters (vegetarian, gluten-free, etc.) makes it a practical service.

An open API service that provides Korean public holidays and substitute holiday information in JSON/iCal format. You can also build a calendar UI and provide it as an embeddable widget.

A dashboard that uses the GitHub API to visually organize open source projects you've contributed to, along with PRs and issues. It's a portfolio tool for organizing your developer career.