July 19, 2026 — The hottest open-source repositories trending on GitHub right now
| # | Repository | Description | Language | Stars | Tags |
|---|---|---|---|---|---|
| 1 | KinetiNode/claude-fable-5-system-prompt-clean | Optimized Claude Fable 5 / Mythos 5 system prompt. Token-efficient, re-engineered for Gemini 3.1 Pro, ChatGPT 5.6, and advanced LLM agents. | Markdown | ⭐ 2,073 | 🔥 Hot |
| 2 | tandpfun/wardrobe | Your clothes, extracted and organized with GPT-Image. AI-powered fashion digitization tool. | JavaScript | ⭐ 1,102 | 📈 Trending |
| 3 | nethical6/conversation-steganography | Use LLMs to hide messages inside normal-looking conversations. AI steganography tool. | Go | ⭐ 767 | 📈 Trending |
| 4 | PostmanReminisce/Wisp-VPN | Free open-source VPN client for Windows based on WireGuard. No logs, unlimited traffic. Bypasses censorship in Russia. | C# | ⭐ 124 | 🆕 New |
| 5 | codecrafters-io/build-your-own-x | Master programming by recreating your favorite technologies from scratch. Evergreen mega-list. | Markdown | ⭐ 528,608 | 👑 Classic |
| 6 | sindresorhus/awesome | Awesome lists about all kinds of interesting topics. The original mega-list. | Markdown | ⭐ 486,595 | 👑 Classic |
* Star counts are approximate and update in real-time via GitHub API. Data as of July 19, 2026.
| Repository | Description | Stars |
|---|---|---|
| Claude Fable 5 System Prompt | Re-engineered Claude F5 system prompt optimized for token efficiency and universal LLM compatibility | ⭐ 2,073 |
| Wardrobe AI | AI-powered clothes digitization using GPT-Image. Extract and organize your wardrobe from photos. | ⭐ 1,102 |
| Conversation Steganography | Hide messages inside normal AI conversations using LLM-based steganography techniques. | ⭐ 767 |
🔥 AI prompts and system engineering dominate today's trending — the Claude Fable 5 prompt has rapidly climbed to 2K+ stars as developers seek optimized prompt templates for maximum LLM performance.
🤖 AI-powered tools continue to be the hottest category. Wardrobe (AI clothes digitizer) and Conversation Steganography both represent novel applications of AI that solve real problems in unexpected ways.
🔒 Security and privacy tools remain relevant with Wisp-VPN targeting censorship bypass and Conversation Steganography offering privacy through obscurity.
📚 Evergreen content still drives massive traffic — build-your-own-x and awesome continue to be the most-starred repos in their categories, serving as foundational resources for developers.
GitHub's trending algorithm considers multiple signals including the number of new stars a repository gained in the past day, the number of new authors, and whether the repository was forked during that timeframe. The algorithm also factors in the repository's overall star history to normalize for mature projects.
The Claude Fable 5 system prompt represents a breakthrough in prompt engineering. Developers are sharing optimized prompts that unlock significantly better performance from Claude, Gemini, and other LLMs. This is part of the broader "prompt engineering" movement that's become a critical skill in AI development.
This page is automatically generated from GitHub's trending API. To appear here, your repository needs to gain significant traction (rapid star growth and community engagement) within a 24-hour window. Focus on building a genuinely useful project — the trending algorithm rewards quality.
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