Apps

A real-time push notification app for sending and receiving

Send important news to one person or several by push notification, and check received notifications and the delivery and read status of sent ones on a single screen. Just write a subject and a message, and it goes out right away. (Android — released on Google Play)

A desktop viewer that displays Markdown from local folders and GitHub in GitHub style

A light, fast cross-platform Markdown viewer built on Tauri. Read documents from local files and remote GitHub repositories in GitHub style, and get around them easily with Mermaid diagrams, rich-text copy, a table of contents, navigation history, and export. Tokens are kept in the OS keychain, and locally the app reads only folders you open yourself. (Windows · macOS · Linux)

A collection of ultra-lightweight keyboard shortcut utilities for Windows

A collection of shortcut utilities written using only the pure Win32 API, with no GUI framework or CRT, to keep executable size and memory usage to a minimum. The first tool, nShiftSpace, is about 5 KB and toggles Korean/English input with Shift+Space, and you can also choose an LED build that shows key presses on the tray icon.

The same UI on Windows · macOS · Linux · an ultra-lightweight, all-Rust dual-pane file explorer

A lightweight file explorer with dual panes, per-pane tabs, and a tree that expands inside the list. A Rust executable with no runtime, it works with the same UI on three OSes and includes everyday tools such as checksums, a duplicate file finder, folder compare, batch rename, and a transfer queue, plus the command-line copy tool nexa-copy. (Windows 10/11 · macOS 11+ · Linux)

An ultra-lightweight Windows memory watcher and cleaner that stays in the tray

Shows what is taking up memory using the same criteria as Task Manager, and reclaims it when you need it. On the principle that the tool itself must be the lightest thing running, it holds to an exe of 0.67MB and about 1.3MB of idle resident memory, measured at every milestone. (Windows 10/11)

An end-to-end encrypted messenger with no setup: launch it and colleagues on the same network appear right away

No server address, no account, no contact registration. When you launch it, people running it on the same network appear in the list automatically; pick one and you are talking over an end-to-end encrypted session. Received files must pass quarantine → scanning → approval before they come out as real files, and contacts on other networks are reached through a relay server that cannot see content. Build size about 3.9MB · idle resident memory about 25MB · 0 runtime dependencies. (Windows · macOS · Linux)

An encrypted clipboard manager with the same interface on all three OSes — syncs text, images and files with end-to-end encryption between your own approved devices

The text, images, file paths and formatting you copy accumulate encrypted on your PC, and one hotkey (Shift+Alt+C) opens a popup where you search and paste straight into the app you were using. It is a single all-Rust executable with its own CPU rasterizer (no Qt, WebView or Electron), so the interface is pixel-identical on Windows, macOS and Linux. Sync is optional: over a same-network direct connection or through a relay server, it exchanges text and images with Noise end-to-end encryption only with devices you have approved, and files are fetched from the source device at the moment you paste. With three or more devices, approved devices tell each other about the others so they can be found. Windows installer about 1.6MB · startup 105ms · idle memory 13.5MB.

An ultra-lightweight tray timer that shows the remaining time and keeps your PC awake

Pick a duration from the menu, and for that time it prevents the screen saver, display turn-off, and sleep, while the tray icon shows the remaining time as a number and a ring. The Windows executable is about 32KB, and it works the same way on Windows, macOS, and Linux with no external libraries.

A local document studio for building editable PowerPoint decks and Excel sheets with an AI session

Edit slides and sheets in a web editor running on your PC and send request notes; a web session started by the server, or an AI CLI session you opened yourself, picks them up and handles them. The results export as PPTX built from native PowerPoint shapes rather than images, and as Excel files with live formulas and formatting.

A lightweight SQL client (IDE) that works the same on three OSes, plus the nsql CLI — SQL*Plus-style session variables on every DBMS

An all-Rust SQL IDE and command-line tool, nsql, that connects to Oracle, SQL Server, PostgreSQL, MySQL/MariaDB, SQLite, DuckDB, IBM Db2, ClickHouse, and ODBC sources. SQL*Plus scripts using VAR, EXEC :V, SELECT INTO, PRINT, and DEFINE also run on other DBMSs, and the GUI and CLI share the same engine, profiles, and settings. Drivers install as signed packages the first time you connect, and SSH tunnels, xlsx/parquet import and export, and read-only profiles are included.

An open-source, self-hosted BaaS platform for mobile and web apps

Authentication, data, files, push, and offline sync: what an app backend needs, all in one. It comes with 12 services, a client SDK, a developer console, and an example app, and you host the server yourself with Docker. The server features other than billing and subscriptions are implemented, and public release is in preparation.