YugPatcher — Powerful Core with an Effortless GUI Configurator, easy to setup and very powerful [ensure development will last for many years]

[master@ragna 12]

After testing almost the patcher, i decided to make a patcher that is almost perfect and is active and stays updated, if you want a fully stable and continuous actively developed patcher , which never gets outdated.
try Yug Patcher.

We are open for suggestions, feedback and bug report.

my discord: yugwebdev 

  - Thor patch format — SingleFile and MultipleFiles modes, GRF merging or direct extraction
  - GRF support — Read/write GRF v0x0200 and v0x0300, merge patches with zero re-compression
  - Multiple archive formats — .thor, .grf, .zip, .rgz, .7z, and generic file copy
  - Concurrent downloads — 1–16 parallel threads (default 4)
  - Resume support — interrupted downloads pick up where they left off
  - Retry logic — configurable retry count (0–10)
  - Post-patch file renames — automatic renaming after patching completes
  - GRF backup — optional .bak backup before patching
  - Auto-patch mode — starts patching on launch without user interaction
  - Cache management — optional cache clearing after successful patch

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  Distribution & Configuration

  - Single EXE distribution — self-contained, no runtime dependencies
  - ConfigEmbedder — pack config + all resources (images, audio, fonts, icons) into the EXE
  - PatcherConfigurator — visual GUI editor with live preview, color swatches, autosave recovery, validation warnings,
  and preset themes
  - External config — alternative patcher.ini file-based configuration

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  UI Customization

  - Window size — configurable width (400–1920) and height (300–1080)
  - Full color control — accent, secondary accent, buttons, text, panels, title bar, border, all with alpha transparency
  - Background media — image (.jpg/.png/.bmp) or looping video (.mp4/.avi/.wmv/.webm)
  - Custom window icon — .ico and .png support
  - Title bar — custom text color, height, dot indicator, overlay opacity, corner radius, border
  - Button customization — text, colors, hover colors, custom images, absolute positioning, custom dimensions
  - Chrome controls — minimize/close/logs buttons with custom positions and images
  - Log panel — toggleable, copy to clipboard, custom background image, custom position/size
  - Font customization — system fonts or embedded TTF/OTF files with custom size

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  Audio

  - Background music — MP3, OGG, WAV, WMA; volume control, mute toggle, persistent preference
  - Button click sounds — toggleable
  - Button hover sounds — toggleable

  ---
  Single Sign-On (SSO)

  - Integrated login panel — username/password fields with remember credentials
  - Full styling — custom labels, colors, field backgrounds, borders, positioning, images
  - Password options — hashing, character whitelist validation, auto-clear on launch
  - Encrypted credential storage — persistent local caching
  - Custom CLI argument format — configurable argument string passed to game client

  ---
  Custom Buttons & Web Integration

  - Unlimited custom buttons — text or image-based, absolute positioned, with multiple action types: URL, EXE launch,
  Play alias, Patch alias
  - Web panels — embed live HTML/WebView2 content at custom positions and sizes
  - Website & Register buttons — optional quick-link buttons

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  Update & Version Management

  - Self-update — checks server version, downloads new EXE, applies via batch script with auto-restart
  - Update banner notification — visible indicator when update is available
  - Version display — shown in UI

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  Game Client Management

  - Game client launching — configurable EXE path and CLI arguments
  - GRF path config — specify game data file location
  - Allow play while outdated — optional, lets user launch game with pending patches

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  User Experience

  - Progress tracking — overall progress bar, per-file progress, download speed (MB/s), file size, phase indicators
  - Real-time log — detachable window, file logging to disk, copy to clipboard
  - Status indicators — dot + text showing Ready / Checking / Patching / Done / Error states
  - Terms of Service dialog — EULA with MD5 hash tracking (accept once, remembered)
  - Auto-enter — countdown then auto-play or auto-patch, cancels on mouse movement
  - Tray icon — minimize to tray with tray menu
  - Keyboard shortcuts — Enter = Play, Escape = Cancel

  ---
  Window Management

  - Borderless custom window — frameless, transparent, drag-to-move, custom-drawn border
  - Optional resize — corner grip for window resizing

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  Security & Validation

  - License key system — per-session validation, grace offline mode (5 starts), DPAPI-encrypted counter
  - Patch lock — prevents multiple patcher instances
  - Path validation — guards against directory traversal in patches
  - Maintenance mode — server-side flag blocks patching with custom message

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  Server Infrastructure

  - Included patch server (Go) — HTTP/HTTPS, TLS 1.2+, CORS, byte-range resume, directory serving, logging middleware
  - Fallback URLs — multiple patch server URLs for redundancy
  - Patchlist format — simple text manifest with comment support and index-based tracking