Open-source

Homegames is an open-source game platform developed over 8 years, featuring JavaScript-based games with accessible source code and an in-browser editor for creating and publishing games. The project's code is hosted on GitHub, and the creator seeks feedback on games, studio features, and the platform.

Skyvern, a company part of YC S23, is hiring Developer Relations Engineers with a focus on open-source contributions. The job posting emphasizes a preference for candidates passionate about open-source projects.

A security flaw in Gitea, an open-source version control platform, allows unauthenticated attackers to access private container images. The vulnerability, CVE-2026-27771, affects all versions prior to 1.26.2 and was disclosed by cybersecurity researchers.

Audiomass is a free, open-source multitrack audio editor for the web, showcased on Hacker News with 42 points and 10 comments.

Microsoft has open-sourced what it claims is the earliest DOS source code discovered to date, marking a significant move in its open-source initiatives. The release was announced via a blog post in April 2026, highlighting historical software preservation efforts.

z386 is an open-source recreation of the Intel 80386 processor built around its original microcode, developed by the Nand2Mario team. The project aims to preserve and modernize the 1980s-era x86 architecture through open-source hardware design.

Mistral AI released Mistral Medium 3.5, a Western open-source AI model competing in the top tier, but it faces criticism for higher costs compared to Chinese rivals that outperform it on benchmarks.

Hackers are exploiting a critical pre-authentication SQL injection vulnerability (CVE-2026-42208) in the LiteLLM open-source LLM gateway to access sensitive information. The flaw allows attackers to bypass authentication and manipulate database queries, risking data exposure.

BookStack, an open-source document management platform, has migrated its repository from GitHub to Codeberg, a self-hosted alternative. The move aligns with the project's commitment to open-source principles and decentralization.

Warp, a terminal emulator, has transitioned to an open-source project. The announcement includes a blog post and Hacker News discussion with 72 points and 30 comments, indicating community interest.

Blockstream has launched Jade Core, a hardware wallet designed to simplify Bitcoin self-custody with a user-friendly experience while maintaining open-source security. The device supports Bluetooth, offline transaction signing, and features like Blind Oracle PIN protection, aiming to expand Bitcoin adoption by reducing barriers for less technical users.

Microsoft has released VibeVoice, an open-source voice AI tool, marking a new initiative in accessible voice technology. The project is hosted on GitHub and has gained traction with 40 points and 10 comments on Hacker News.

Localsend is an open-source, cross-platform alternative to Apple's AirDrop, designed for file sharing between devices. The project is hosted on GitHub and has gained traction with 122 points and 40 comments on Hacker News.

The article discusses how open weights in AI models are disrupting traditional competitive advantages ('moats') held by proprietary systems. It references a blog post by Warman and Hacker News comments, highlighting debates around open-source AI's impact on market dynamics.

rawbit is a free, open-source educational tool for building and understanding Bitcoin transactions visually. It offers interactive features like live script execution, Python code integration, and 14 hands-on lessons covering topics such as SegWit, Taproot, and multisig, all testable on Bitcoin's testnet.

Cal.diy is an open-source community edition of Cal.com, a scheduling platform, hosted on GitHub. The project aims to provide a customizable, community-driven alternative to the original Cal.com service. The article highlights its GitHub repository and Hacker News engagement metrics.

The author, a backend engineer, developed ETour, a fully on-chain, open-source tournament protocol on Arbitrum, emphasizing fairness, decentralization, and no reliance on traditional backend infrastructure. The project prioritizes real utility over speculative tokenomics, aiming to create a self-sustaining, decentralized competitive infrastructure.