Ask HN: What are you working on? (September 2026)
This month's 'What are you working on?' delivers a smorgasbord of ingenious projects, showcasing the sheer breadth of Hacker News's collective DIY and entrepreneurial spirit. From AI-driven software factories to open-source hardware hacks and privacy-focused tools, the community consistently inspires with its diverse technical ambition. It's a recurring highlight, celebrated for its unique blend of practical solutions, deeply technical dives, and the occasional delightfully quirky endeavor.
The Lowdown
The 'Ask HN: What are you working on?' thread is a beloved monthly tradition, a digital show-and-tell where the Hacker News community shares their latest creations, side projects, and ambitious undertakings. This September installment, true to form, bursts with a vibrant array of innovative and often deeply technical projects, reflecting current trends in AI, hardware, and personal development. Amidst the serious coding and entrepreneurial ventures, the thread also offers glimpses into personal hobbies, showcasing the diverse passions of its contributors.
Key themes emerging from this month's contributions include:
- AI-Native Development: A significant portion of projects leverage AI, from building custom IDEs with multiple agent harnesses and AI-powered software factories to creating intelligent systems for 3D printing design, healthcare data analysis, and even translating Finnish sci-fi novels.
- Developer Tooling & Infrastructure: Many are crafting new tools to improve the development experience, such as user-friendly Kubernetes wrappers, self-hosted Git GUIs, Rust-based XML parsers, and novel UI frameworks. The drive for efficiency and control over one's stack is palpable.
- Privacy and Local-First Solutions: Several projects champion user privacy and autonomy, offering ad-free search engines, local-only AI browser summarizers, self-hosted chat alternatives, and collaborative workspaces built on CRDTs with data ownership in mind.
- Hardware Hacking & Custom Creations: The spirit of tinkering is strong, with projects ranging from open-source firmware for smart smokers and retro gaming mice to AES67 audio receivers and DSLs for 3D printer control, demonstrating a hands-on approach to problem-solving.
- Niche Applications & Personal Growth: The thread features a wide spectrum of specialized applications, including an early literacy web app, personalized fitness trackers, tools for astrophotography, public transit software, and even a unique Tamagotchi for readers, proving that no problem is too niche for a hacker to solve.
This monthly ritual underscores the community's relentless pursuit of improvement, often driven by personal frustrations with existing solutions, a desire to learn new technologies, or simply the joy of building something cool. It's a testament to the enduring power of curiosity and the collaborative spirit of Hacker News, with projects spanning from deeply technical open-source contributions to quirky personal inventions, and even, famously, what one made for Sunday dinner.
The Gossip
AI's Ambitious Advancements
AI continues to dominate, with developers building everything from custom IDEs integrated with multiple agent harnesses and fully automated 'software factories' to specialized AI models for 3D printing and healthcare diagnostics. There's also a strong push towards creating privacy-focused AI tools that run locally, like browser summarizers, and platforms designed specifically for AI agent interaction and knowledge sharing.
Developer's Delightful Diversions
Many HN users are immersed in crafting sophisticated developer tools and infrastructure. Projects range from re-imagining Kubernetes for ease of use (making it 'as easy as Heroku') and building custom game engines with unique metaprogramming languages, to developing memory-safe alternatives for critical libraries and specialized database access management systems. The focus is often on performance, flexibility, and solving pain points in existing ecosystems.
Privacy-First Pursuits
A significant number of projects prioritize user privacy, data ownership, and ad-free experiences. This includes private, paid search engines that don't track users, apps designed to consume social media content without algorithms or ads, and collaborative workspaces built on local-first principles with CRDTs to ensure data portability and control. The sentiment leans towards reclaiming digital autonomy.
Hardware Hacking & Hands-On Innovations
The hardware enthusiasts are out in force, sharing projects like open-source firmware for smart charcoal smokers, the development of a DSL for 3D printer control, and a range of smaller, yet intricate, hardware hacks. This category highlights a desire to understand, modify, and build physical systems, often involving reverse engineering and custom electronics.
Life's Little Enhancements
Beyond core tech, many are building applications to enhance daily life, learning, and personal well-being. These include browser-based cognitive training games, comprehensive workout and dieting platforms, and reading companion apps. The focus is on creating practical, often ad-free, tools that help users achieve personal goals or manage everyday tasks more effectively.