YC Alumni News
Graduates of the Y Combinator program often go on to build some of the most influential companies in tech. This section follows those alumni, gathering news about their later funding rounds, product milestones, leadership changes, and long-term impact on the startup landscape.
Coverage ranges from late-stage giants announcing new products or public listings to lesser-known graduates quietly reaching profitability. You will also find stories about second-time founders returning with new ventures, alumni becoming investors themselves, and reunions of teams that first met during a batch.
Alumni trajectories matter because they show what happens long after the accelerator hype fades. Watching how graduated companies mature, stumble, or reinvent themselves offers some of the most honest evidence available about which early-stage bets actually compound into lasting businesses.
Math Is Hard – OpenBSD Stories
2026-04-26Sparked by an OpenBSD story regarding CPU division-by-zero exceptions, readers pivot into a broader critique of modern operating system design and the lingering dominance of the UNIX paradigm. Commenters express frustration that the industry relies on heavy, layered abstractions like Kubernetes rather than developing lean, vertically integrated systems, pointing to alternative microkernels like seL4 and Genode as potential steps forward.

Show HN: Turning a Gaussian Splat into a videogame
2026-04-26A developer has successfully transformed a photogrammetric 3D Gaussian Splat scene into a fully playable browser-based first-person shooter. Built entirely within the PlayCanvas engine, the project incorporates advanced mechanics such as collision detection, pre-baked lighting, and behavior-tree AI for non-player characters.

GoDaddy gave a domain to a stranger without any documentation
2026-04-26GoDaddy abruptly seized a domain name from an organization that had used it for 27 years and transferred it to a stranger. The domain registrar executed the sudden takeover without providing the original owners any advance warning or supporting documentation.
The Super Nintendo Cartridges (2024)
2026-04-26A discussion surrounding Super Nintendo cartridges and retro gaming technology celebrates the hardware ingenuity used to overcome the technical limitations of early consoles like the Atari 2600, NES, and Super Nintendo. Enthusiasts highlight fascinating cart-based workarounds, such as adding co-processors to expand processing power and using electrical shocks to bypass proprietary lockout chips. The conversation also reflects on the era's broader pioneering innovations, including the Sega Channel's early cable-based game distribution system.

Chernobyl wildlife forty years on
2026-04-26Marking four decades since the Chernobyl nuclear disaster, researchers are evaluating the long-term effects of radiation on the surrounding wildlife. The study examines how local animal populations have adapted and persisted within the heavily contaminated exclusion zone over the years. These findings offer unique insights into environmental resilience following a major nuclear catastrophe.

The Visible Zorker: Zork 1
2026-04-26A new software exhibit called The Visible Zorker allows users to play the classic text adventure Zork 1 while simultaneously displaying its underlying source code. This interactive tool provides developers and retro gaming enthusiasts with a real-time look at the foundational programming behind the iconic game.

The route from Prussian military headquarters to Gary Gygax’s basement
2026-04-26Historian Jon Peterson traces the historical evolution of modern tabletop role-playing games. His research maps the fascinating journey of these interactive mechanics from their origins in Prussian military wargaming to their ultimate realization in Gary Gygax's basement.
New 10 GbE USB adapters are cooler, smaller, cheaper
2026-04-25New RTL8159-based 10 GbE USB 3.2 adapters are entering the market to challenge the bulky, expensive Thunderbolt models previously required for high-speed laptop networking. These next-generation dongles are significantly smaller, cooler, and more affordable than their predecessors. Users can now finally access true 10 gigabit bandwidth through standard USB ports without suffering from massive thermal or spatial drawbacks.

The Free Universal Construction Kit
2026-04-25The Free Universal Construction Kit introduces a comprehensive set of adapters designed to create complete interoperability between ten popular children's building toys. This innovative project allows kids to seamlessly mix and match different brands of construction sets, unlocking endless new possibilities for creative play.

Using coding assistance tools to revive projects you never were going to finish
2026-04-25A developer successfully used the AI coding assistant Claude Code with Opus 4.6 to revive and complete an abandoned project connecting YouTube Music and OpenSubsonic. The tool significantly accelerated the development process, transforming an unfinished idea into a fully working application in a remarkably short amount of time.
1-Bit Hokusai's "The Great Wave" (2023)
2026-04-25A striking 1-bit digital recreation of Katsushika Hokusai's The Great Wave has prompted online readers to discuss the crisp aesthetics of monochrome pixel art and its nostalgic ties to early Macintosh displays. Alongside technical appreciation for retro computing and limited-resolution artwork, the community expressed profound admiration for the original Japanese master's timeless brushwork and emotional depth.
USB Cheat Sheet (2022)
2026-04-25The 2022 USB Cheat Sheet provides a highly praised, comprehensive overview of USB specifications that was recently updated to correctly define SBU pins as Sideband Use. Readers commend the author for his technical accuracy and quick responsiveness to feedback, comparing the guide favorably to his other in-depth hardware articles.

Plain text has been around for decades and it’s here to stay
2026-04-25A recent blog post on software craft highlights the enduring value and relevance of plain text in modern development. Despite the proliferation of complex data formats, plain text remains an essential foundation for building high-quality and easily maintainable software systems.
Replace IBM Quantum back end with /dev/urandom
2026-04-25A developer launched a satirical GitHub repository named quantumslop that replaces the IBM Quantum backend with the Linux /dev/urandom random number generator. Although the project failed to win a QDay programming challenge, it offers a humorous take on the noise and hype surrounding current quantum computing advancements.
Martin Galway's music source files from 1980's Commodore 64 games
2026-04-25A newly launched GitHub repository now hosts Martin Galway's original music source files from classic 1980s Commodore 64 games. This open-source initiative allows developers and retro gaming enthusiasts to access, preserve, and contribute to the historical audio code.

There Will Be a Scientific Theory of Deep Learning
2026-04-25A newly published arXiv paper posits that a rigorous scientific theory of deep learning will inevitably emerge to fully explain neural network behavior. The authors argue that transitioning from purely empirical observations to a unified mathematical framework is essential for the field's continued advancement. This foundational theory aims to demystify exactly why deep learning models generalize so effectively despite their immense architectural complexity.
The Joy of Folding Bikes
2026-04-25A commuter reflects on their eleven-year experience using a folding bike to seamlessly navigate London's public transit network, highlighting its convenience and theft-prevention benefits. The author emphasizes that the compact device eliminates expensive station parking and offers long-term financial savings, making it a highly practical and cost-effective alternative to traditional urban transit.
Work with the garage door up (2024)
2026-04-25Discussions surrounding a recent article about working with the garage door up explore the benefits and psychological hurdles of building tech projects in public versus behind closed doors. While transparent development can demystify the creation process and engage communities, some developers find that sharing unfinished work prematurely drains their motivation due to the goal disclosure effect. Ultimately, the conversation highlights how individual psychology dictates whether creators thrive with their metaphorical garage door open or closed.

Humpback whales are forming super-groups
2026-04-25Photographers recently captured images of 304 individual humpback whales during a misty morning in December. This marks the highest number of large whales ever identified in a single day. The record-breaking gathering highlights a growing trend of these marine mammals forming massive super-groups.
Paraloid B-72
2026-04-25A reader discussion highlights the versatile applications of the acrylic resin Paraloid B-72, specifically its use in an acetone solution to preserve and strengthen porous materials such as human bones and fossils. The conversation also explores the complex science of structural adhesives, noting the proprietary trade secrets of major chemical companies and recommending specific consumer-grade products for various bonding needs.