Top 406 Show HN Open-Source Projects & Libraries (July 2026)
launchesBrowse newly launched open-source repositories, developer libraries, and community software in July 2026. Use this list to explore open-source tools.
Hacker News Digests — July 31, 2026
https://geodataviewer.com— Free Online GIS Viewer and Format Converter
https://bull-run.org— BullRun – free global stock screener with an MCP server
https://quelloai.com— Free online tools in one place
https://figit.design— Open-source library to copy-paste HTML into Figma as editable layers
https://slopenclaw.com— SlopenClaw, an AI agent that procrastinates for you
https://vektorgeist.com— Vektorgeist
https://thecirclebracket.com— The Circle Bracket for World Cup - Open Source
https://opencan.dev— OpenCan – Open-source, self-hostable Canny alternative (AGPL-3.0)
https://frem.sh— Fremforge: Forgejo-based, EU-hosted Git/CI with its own Sigstore instance
https://portal.qualityclouds.ai— Scores how production-ready your AI-generated code is
https://skins.webamp.org— Winamp Skin Museum
https://slopcop.adriankrebs.ch— Design Slop Cop – score how AI-generated a website looks
https://getquality.md— QUALITY.md – open format/specification, agent skill, and CLI
https://research.oguzbilgic.com— Open-sourcing my personal market research
https://openagentloops.featherless.ai— A provider-agnostic agent loop built on ports and adapters
https://blastradar.vercel.app— BlastRadar – paste a Git diff, get a production risk score in 10 seconds
https://capcat.org— Capcat – CLI/TUI to Archive Articles as Markdown and HTML (FOSS)
https://opencorp.live— I built an app to find your competitors
https://heyhalo.app— I built Halo, a private AI assistant for your Mac (free)
https://righttointelligence.org— Right to Local Intelligence
https://fonts.free— Fonts.Free
https://keepfable.org— Open letter to Anthropic: keep Claude Fable 5 in existing paid plans
https://flashconsult.ctonew.app— Free tool that finds your #1 digital workflow bottleneck in 5 minutes
https://startupbar.co— StartupBar – free mutual traffic exchange for founders (Modern WebRing)
https://authorscalendar.info— Library Song
https://taisei-project.org— Open Source Touhou Clone
https://brumeorg.github.io— Brume – Postgres pseudonymization that preserves FKs across tables
https://socsimulator.com— SoC Simulator – Browser SoC training grounded in real Intel, free
https://sfpl-events.ocaho.com— San Francisco Library Events
https://favorpdf.com— FavorPDF – Free PDF tools, no sign-up, no watermark
https://blackstork.io— BlackStork – render cybersecurity reports directly from structured data
https://ads.openai.com— Ads in ChatGPT
https://solitaire.free— Solitaire.Free - Play Klondike, FreeCell & Spider Solitaire Online
https://starts.live— Building is free now. Being wanted isn't
https://flippingbooks.org— FlipFlow FlipFlow turns PDF, Word, and images into flipbooks
https://psycurate.com— Psycurate – Curated place for privacy-first, free psychological tools
https://traceinstitute.org— Trace Institute
https://theque.app— Thèque, a private visual library for the things you save
https://galaxy.opensyllabus.org— Open Syllabus: Galaxy
https://clipart.free— Clipart.free – Public-Domain Clipart
+ 366 more verified launches in full dataset...
Key Launch Stats (Show HN Open-Source Repositories — July 2026)
During July 2026, a total of 406 product launches were recorded in this category up to 2026-07-31.
Here is a quick look at launch activity and naming characteristics:
- Total Launches: 406 domains
- Busiest Launch Day: 2026-07-19 (21 launches)
- Average Domain Name Length: 9.4 characters
- Shortest Domain: 1.org
- Longest Domain: societyforhopefultechnologists.org
- Clean / Single-Word Domains: 88.9%
- Common Name Prefixes: open (16), the (7), ai (6), get (5), pro (4)
- Common Keywords: ai (106), app (46), ui (42), tool (37), dev (33)
How to Use This Data
You can use this list of Hacker News and builder releases to find emerging tools, track indie projects, or connect with early-stage builders.
To browse or download the full master dataset of 15,500+ startup launches in CSV and JSON formats, visit the Launches Master Dataset.