Trending GitHub projects in September 2026
219 projects trended · 0 new reviews · 11 hot on Hacker News
September's list is dominated by the maturing of coding agents into infrastructure. The clearest signal is the wave of "skills" projects that package reusable behavior for agents: affaan-m/ECC layers skills, memory and guardrails across CLI harnesses, while DietrichGebert/ponytail pushes agents to reuse existing code and mattpocock/skills ships a working set straight from a .claude directory. A related thread is agent memory and orchestration as a product of its own, seen in vectorize-io/hindsight's retrieval layer and paperclipai/paperclip's dashboard for running teams of heterogeneous agents.
A second theme is local-first and privacy-minded tools. debpalash/VoiceStudio leads the month with a desktop voice cloning and dubbing app that keeps audio off the cloud, and JustVugg/colibri runs frontier MoE models in pure C on hardware you already own. Security work also appears as a skill: cloudflare/security-audit-skill wraps a multi-phase audit with independently verified findings.
Finally, media and learning tools round out the list, from heygen-com/hyperframes turning HTML and CSS into deterministic MP4s to rohitg00/ai-engineering-from-scratch's 542-lesson curriculum.
Top 20 of the month
Ranked by stars gained on the daily board over the month.
- 1debpalash/VoiceStudio+30,007
A local desktop app for voice cloning, dubbing and transcription, aimed at creators who want ElevenLabs-style output without sending audio to a cloud service.
- 2vectorize-io/hindsight+19,403
A memory layer that turns raw agent conversations and facts into retrievable, evolving knowledge for production agents.
- 3affaan-m/ECC+17,431
A shared layer of skills, memory and guardrails that makes coding agents behave consistently across different CLI harnesses.
- 4alibaba/open-code-review+16,918
Secure, fast, efficient, battle-tested at Alibaba's scale. Hybrid architecture code review tool: deterministic pipelines + LLM Agent, precise line-level comments, built-in multi-language ruleset (NPE, thread-safety, XSS, SQL injection), OpenAI & Anthropic compatible. Review coming soon
- 5
A coding-agent skill that runs a multi-phase security audit with independently verified findings for codebases you own.
- 6ayghri/i-have-adhd+15,803
A skill to stop your coding agent from burying the answer. ADHD-friendly output. Review coming soon
- 7paperclipai/paperclip+15,024
Runs a team of heterogeneous coding agents like a company: goals, org chart, budgets and audit trails in one dashboard.
- 8mattpocock/skills+14,505
Skills for Real Engineers. Straight from my .agents directory. Review coming soon
- 9bilawalsidhu/gods-eye-view+13,073
A spy satellite simulator in your browser, except the data is real. Live open source spatial intelligence on a photorealistic 3D globe. Review coming soon
- 10DietrichGebert/ponytail+11,751
A skill pack that pushes coding agents to reuse existing code and write only what the task needs.
- 11
38 editorial diagram types for Claude Code, Codex, and Pi. Self-contained HTML + SVG. No shadows. No Mermaid slop. Review coming soon
- 12JustVugg/colibri+8,452
Run frontier MoE models on hardware you already own — pure C, zero deps, experts streamed from disk. Tiny engine, immense model. Review coming soon
- 13
- 14THU-MAIC/OpenMAIC+7,893
Open Multi-Agent Interactive Classroom — Get an immersive, multi-agent learning experience in just one click Review coming soon
- 15dream-num/univer+7,708
An embeddable office SDK that lets teams put spreadsheets, docs and slides inside their own product or agent pipeline.
- 16heygen-com/hyperframes+6,341
Turns HTML, CSS and seekable animations into deterministic MP4s for developers and agents producing video programmatically.
- 17obra/superpowers+6,326
An agentic skills framework & software development methodology that works. Review coming soon
- 18
A 542-lesson curriculum that teaches you to implement, test and evaluate model internals, retrieval and agent runtimes yourself.
- 19blader/humanizer+5,196
Agent skill that removes signs of AI-generated writing from text Review coming soon
- 20addyosmani/agent-skills+4,903
Packaged engineering workflows that make AI coding agents follow spec, test and review discipline across the dev lifecycle.
Leaders by topic
Developer Tools
- affaan-m/ECC+17,431
A shared layer of skills, memory and guardrails that makes coding agents behave consistently across different CLI harnesses.
- DietrichGebert/ponytail+11,751
A skill pack that pushes coding agents to reuse existing code and write only what the task needs.
- addyosmani/agent-skills+4,903
Packaged engineering workflows that make AI coding agents follow spec, test and review discipline across the dev lifecycle.
Machine Learning
An end-to-end platform for training and deploying neural networks, aimed at researchers and production ML engineers.
Trains 3D Gaussian Splatting models from photos or video inside one binary, without Python, PyTorch or COLMAP.
AI Engineering
- vectorize-io/hindsight+19,403
A memory layer that turns raw agent conversations and facts into retrievable, evolving knowledge for production agents.
- paperclipai/paperclip+15,024
Runs a team of heterogeneous coding agents like a company: goals, org chart, budgets and audit trails in one dashboard.
- Tencent/WeKnora+3,449
Turns a team's scattered documents into a searchable RAG, a tool-using agent and a self-maintained wiki on one platform.
Data
- t8y2/dbx+1,593
A 25 MB cross-platform database GUI/CLI covering relational, NoSQL and analytical engines, aimed at developers and DBAs tired of overweight clients.
A pay-as-you-go SEO suite with keyword research, rank tracking and audits, plus MCP access for AI agents.
DevOps & Self-hosting
A self-hostable Postgres backend platform that bundles auth, APIs, storage and realtime so small teams skip assembling them.
Security & Privacy
A coding-agent skill that runs a multi-phase security audit with independently verified findings for codebases you own.
An NSA-built reverse engineering framework for disassembling and decompiling binaries when you need to understand code you cannot see.
- SnailSploit/Claude-Red+2,857
Curated SKILL.md library that gives Claude red-team methodology per attack surface, for authorized pentesters and CTF players.
Productivity & Utilities
- dream-num/univer+7,708
An embeddable office SDK that lets teams put spreadsheets, docs and slides inside their own product or agent pipeline.
- ever-co/ever-gauzy+3,495
An open ERP/CRM/HRM suite for small teams that want time tracking, invoicing and projects in one self-managed system.
Role-specific Claude Cowork plugins that give non-engineers prebuilt skills, commands and tool connectors for their job function.
Media & Design
- debpalash/VoiceStudio+30,007
A local desktop app for voice cloning, dubbing and transcription, aimed at creators who want ElevenLabs-style output without sending audio to a cloud service.
- heygen-com/hyperframes+6,341
Turns HTML, CSS and seekable animations into deterministic MP4s for developers and agents producing video programmatically.
- browser-use/video-use+2,627
Turns raw footage into a cut video through a coding agent, for people who would rather describe an edit than drag clips on a timeline.
Learning Resources
A 542-lesson curriculum that teaches you to implement, test and evaluate model internals, retrieval and agent runtimes yourself.
- byoungd/up+1,739
A bilingual, opinionated self-study guide for adults who want to learn English, work with AI, and ship real projects.
A curated directory of reusable Claude Skills that shows agent users where to find instructions for document, coding and workflow tasks.
Hardware & IoT
Training environments and sim2real recipes for teaching a small bipedal robot to walk with reinforcement learning.
Finance
A multi-agent LLM framework that debates and decides stock trades, for researchers and quant-curious developers.
Bridges Claude Code to a locally running TradingView Desktop so an LLM can read, draw on and script your own charts.