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YC News Startups

Startups connected to Y Combinator are the focus here. Read about newly launched products, growth milestones, fundraising news, and shutdowns, along with analysis of the patterns that emerge when hundreds of ambitious young companies pass through the same accelerator.

Coverage often clusters around launch season, when dozens of new companies announce themselves in quick succession, and around funding cycles, when graduates close seed and Series A rounds. Between those peaks you will find growth stories, pivot announcements, and honest post-mortems from teams that wound down.

Studying many startups from a shared starting point is unusually revealing, because differences in outcome say more when the initial conditions are similar. Founders mine these stories for tactics, while investors and researchers use the cohort view to separate durable trends from passing fashion.

Artifacts: Versioned storage that speaks Git
2026-04-16

Artifacts has officially launched as a scalable, Git-compatible versioned storage solution built specifically for agents, developers, and automations. The platform allows users to create millions of repositories, fork from remote sources, and seamlessly hand off URLs to any standard Git client.

Cloudflare Email Service
2026-04-16

Cloudflare has entered the public beta phase for its new Email Service, allowing developers to integrate email capabilities directly into their agents. This infrastructure enables agents to natively send, receive, and process messages, expanding their multi-channel reach into users' inboxes.

New unsealed records reveal Amazon's price-fixing tactics, California AG claims
2026-04-16

Newly unsealed documents from California's antitrust lawsuit against Amazon reveal alleged price-fixing tactics used by the tech giant. The state's Attorney General claims these records demonstrate how Amazon manipulated prices, though the company firmly denies any illegal pricing practices.

Retrofitting JIT Compilers into C Interpreters
2026-04-16

A new technique leverages a modified LLVM fork to retrofit JIT compilation directly into C-based interpreters by optimizing the interpreter's underlying execution loop. By manually annotating the interpreter's C code, developers can significantly boost performance, such as doubling execution speed for Lua, without altering the actual programs being interpreted. While the approach currently requires specialized knowledge and manual modifications, it offers a promising method for accelerating language interpreters that could potentially be automated in the future.

RedSun: System user access on Win 11/10 and Server with the April 2026 Update
2026-04-16

A new technique dubbed RedSun grants SYSTEM-level access on Windows 11, 10, and Server, underscoring the security risks of antivirus software operating with full system privileges. Discussions surrounding the issue emphasize that allowing tools like Windows Defender to run as SYSTEM creates massive attack surfaces ripe for privilege escalation exploits. Security advocates argue that Microsoft should handle core system-level scanning natively while restricting antivirus remediation components to lower-privilege, sandboxed environments.

Launch HN: Kampala (YC W26) – Reverse-Engineer Apps into APIs
2026-04-16

YC W26 startup Kampala allows developers to reverse-engineer private applications into usable APIs by analyzing network traffic and HAR files. Reader discussions highlight the tool's utility for building custom automations, but also note challenges such as mobile SSL pinning and potential terms of service violations. The creators clarified that the platform is designed to facilitate personal automation workflows rather than enable mass-scale scraping.

Show HN: MacMind – A transformer neural network in HyperCard on a 1989 Macintosh
2026-04-16

A developer recently created MacMind, a single-layer transformer neural network implemented entirely in HyperTalk for the classic 1989 Macintosh. This fascinating technical experiment pushes the boundaries of retro computing by successfully running modern AI architecture natively within the decades-old HyperCard environment.

The "Passive Income" trap ate a generation of entrepreneurs
2026-04-16

A recent article explores how the elusive dream of passive income has trapped a generation of entrepreneurs through predatory dropshipping and get-rich-quick schemes. While readers debate whether the true culprit is modern corporate consolidation or simply the unrealistic expectations sold by influencers, they agree the modern business landscape is highly challenging. Ultimately, many commenters note the irony that the most consistent passive income is actually generated by selling online courses teaching others how to get rich.

The Gemini app is now on Mac
2026-04-16

Google is expanding the reach of its AI assistant by launching the Gemini app for macOS. This new release provides Mac users with a dedicated, native desktop experience for seamless interaction.

North American English Dialects
2026-04-16

Readers discussed the rich variety of hyperlocal English dialects in New Orleans, noting how distinct neighborhood accents often surprise outsiders by sounding similar to New York or Brooklyn. Locals frequently shift between these regional dialects depending on their audience, reflecting the city's deeply insular and diverse neighborhoods. However, while some noted that platforms like YouTube can bridge cultural gaps, others expressed concern that a neutral, internet-influenced speech pattern is slowly erasing these unique linguistic cultures.

Introduction to spherical harmonics for graphics programmers
2026-04-16

A recently discussed article introduces the mathematical foundations of spherical harmonics specifically tailored for graphics programmers. Readers in the accompanying discussion explain how these orthogonal functions efficiently compress and integrate complex lighting data while outlining the necessary mathematical prerequisites like calculus and linear algebra. The conversation also highlights the mathematics' broader utility beyond computer graphics, noting its applications in spatial audio, optics, and quantum mechanics.

Modern Microprocessors – A 90-Minute Guide
2026-04-16

Readers of a highly praised, clean, ad-free guide to modern microprocessors are calling for a similar comprehensive breakdown of modern microcontrollers. The discussion highlights key architectural differences such as pipeline design strategies, fast on-chip memory, and the dominance of peripherals and DMA engines. Additionally, the community commends the original website's minimalist design and suggests adding topics like advanced branch predictors and data prefetching to future editions.

Show HN: CodeBurn – Analyze Claude Code token usage by task
2026-04-16

CodeBurn is a free local tool that tracks and analyzes AI coding token usage and costs across 31 different tools and agents like Claude Code, Cursor, and Gemini. Developers can break down these metrics by model, project, and task simply by running the npx codeburn command locally.

Google broke its promise to me – now ICE has my data
2026-04-15

Google has broken its nearly decade-long promise to notify users before handing their data to law enforcement. The company recently provided user Amandla Thomas-Johnson's information to ICE without prior warning, depriving him of the opportunity to challenge the subpoena.

Cybersecurity looks like proof of work now
2026-04-15

Modern cybersecurity now resembles a computational proof of work model as defenders battle automated AI-driven threats. This new paradigm forces security teams to continuously outspend attackers in terms of processing tokens, raising critical concerns about the long-term sustainability of cyber defenses.

ChatGPT for Excel
2026-04-15

OpenAI is launching a beta integration of ChatGPT for Excel and Google Sheets, available to Plus, Pro, Business, and Enterprise subscribers. This new tool allows users to build spreadsheets, analyze data across multiple tabs, and review results before sharing.

Live Nation illegally monopolized ticketing market, jury finds
2026-04-15

A jury has ruled that Live Nation illegally monopolized the ticketing market, culminating in a landmark antitrust trial after years of regulatory scrutiny. The verdict now sets the stage for a potential breakup of the largest US concert promoter and ticket seller.

Cal.com is going closed source
2026-04-15

After five years as an open-source project, Cal.com is transitioning to a closed-source model to better protect customer data. The company cites rising AI-driven security risks and increased vulnerability discoveries as the primary reasons for this shift.

Stop Flock
2026-04-15

Discussions surrounding the deployment of Flock license plate recognition cameras highlight a deep divide over their effectiveness in addressing public safety concerns. Critics argue the surveillance technology masks broader police inefficiencies and ignores the root causes of crime. Conversely, proponents maintain the systems provide crucial investigative tools that help solve crimes in struggling cities.

God sleeps in the minerals
2026-04-15

A recent photo post features snapshots of mineral specimens at the Natural History Museum of Los Angeles County. The images were captured during a visit to the Unearthed: Raw Beauty exhibition to share the beauty of the collection.