10 Fastest-Growing GitHub Repos This Week (Fourth Week of April 2026)

Every week we scan GitHub for the fastest-growing repositories in AI and developer tooling. Here are the 10 repos that exploded in stars this week — from new AI coding tools to open-source frameworks worth bookmarking.

Week of Fourth Week of April 2026 | Ranked by stars gained in the last 7 days.

1. kyegomez/OpenMythos — ⭐ 7.8k

A theoretical reconstruction of the Claude Mythos architecture, built from first principles using the available research literature.

⭐ 7,831 stars 🔀 1,629 forks 💻 Python 📄 MIT
🏷️ ai, anthropic, attention, claude
→ View on GitHub

2. browser-use/browser-harness — ⭐ 4.6k

Self-healing browser harness that enables LLMs to complete any task.

⭐ 4,639 stars 🔀 405 forks 💻 Python 📄 MIT
🏷️ general
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3. alchaincyf/huashu-design — ⭐ 3.9k

Huashu Design · HTML-native design skill for Claude Code · Claude Code 里 HTML 原生的设计 skill · 高保真原型 / 幻灯片 / 动画 + 20 设计哲学 + 5 维评审 + MP4 导出 · Agent-agnostic

⭐ 3,850 stars 🔀 594 forks 💻 HTML 📄 NOASSERTION
🏷️ general
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4. tw93/Kami — ⭐ 2.0k

👩‍🚒 Good content deserves good paper.

⭐ 2,038 stars 🔀 101 forks 💻 HTML 📄 MIT
🏷️ general
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5. cathrynlavery/diagram-design — ⭐ 1.4k

Thirteen editorial diagram types for Claude Code. Self-contained HTML + SVG. No shadows, no Mermaid-slop.

⭐ 1,445 stars 🔀 99 forks 💻 HTML 📄 No license
🏷️ general
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6. EvoLinkAI/awesome-gpt-image-2-prompts — ⭐ 1.4k

Curated GPT-Image-2 prompts and image examples across portraits, posters, UI mockups, character sheets, and community experiments.

⭐ 1,361 stars 🔀 120 forks 💻 Python 📄 NOASSERTION
🏷️ ai-art, awesome-list, evolink, gpt-image-2
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7. wbh604/UZI-Skill — ⭐ 1.1k

冰冷的钱就这样流进我温暖的口袋-游资（UZI）Skills — 51位投资大佬帮你看盘 · 22维数据 × 180条量化规则 × 17种机构分析方法 · A股/港股/美股

⭐ 1,111 stars 🔀 184 forks 💻 Python 📄 MIT
🏷️ general
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8. VoltAgent/awesome-claude-design — ⭐ 1.1k

Awesome Claude Design: 68 ready-to-use design system inspirations in DESIGN.md format. Drop one in, scaffold a full UI in one shot.

⭐ 1,080 stars 🔀 115 forks 💻 Multiple languages 📄 MIT
🏷️ claude-code, claude-design, design-md, design-system
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9. bwjoke/BTC-Trading-Since-2020 — ⭐ 813

Public BTC trading context since 2020.

⭐ 813 stars 🔀 282 forks 💻 Multiple languages 📄 No license
🏷️ bitcoin, bitmex, crypto, dataset
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10. OpenCoworkAI/open-codesign — ⭐ 807

Open-source Claude Design alternative. One-click import your Claude Code / Codex API key. Prompt → prototype / slides / PDF. Multi-model (Claude, GPT, Gemini, Kimi, GLM, Ollama). BYOK, local-first, MI

⭐ 807 stars 🔀 68 forks 💻 TypeScript 📄 MIT
🏷️ ai-design, anthropic, byok, claude
→ View on GitHub

Data pulled from the GitHub Search API. Star counts reflect totals at time of publication. We update this list every Monday. Browse all posts →

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