Top 267 Show HN Open-Source Projects & Libraries (June 2026)
launchesBrowse newly launched open-source repositories, developer libraries, and community software in June 2026. Use this list to explore open-source tools.
Hacker News Digests — June 30, 2026
https://developers.openai.com— OpenAI Docs –> 403: Forbidden
https://metabase.com— Open source analytics that answers backbase
https://zenzic.dev— Zenzic – A strict, heuristic-free Markdown static analyzer
https://readest.com— Readest: Free, open-source, multi-platform ePub and PDF reader
https://utilyard.com— UtilYard – 55 free browser-based tools (calculators, dev utilities, image tools)
https://freemyquery.com— Built a MySQL GUI that visualizes schemas as interactive ER diagrams
https://freeaiwebsiteaudit.com— I Built an AEO/Geo Website Audit Tool
https://salmoncreekfarm-arts.org— Salmon Creek Farm
https://friendlybet.live— FriendlyBet – A free, ad-free World Cup prediction pool with no sign-up wall
https://gitnotes.org— GitHub based note taking mobile app
https://bestofai.io— Best of AI – Handpicked and Curated Open-Source List of AI Tools
https://starmapper.bruniaux.com— StarMapper, see where your GitHub stargazers live on a map (free, OSS
https://garden-of-eda.com— I made a directory of open-source EDA tools
https://capstone-engine.org— Capstone – multi-platform, multi-architecture disassembly framework
https://peachpasswords.com— Peach – a free zero-knowledge password manager with paper disaster recovery
https://planner.mycompassconsulting.com— An open-source, browser-based E-ink planner builder
https://vnn.valyrian.tech— VNN – AI news aggregator that verifies every source live
https://aicounciltoolkit.com— AI Council Toolkit – open-source playbook for AI governance
https://knowable.ca— Knowable – Open-Source Personal AI Tutor on macOS
https://pacever.org— PaceVer (an alternative to SemVer, for mobile apps)
https://apertis.ai— Apertis – OpenAI-compatible API gateway for 470 AI models
https://zorv.openyf.dev— Zorv-Self-hosted autonomous AI that fixes CVEs
https://mdrone.org— Mdrone – a microtonal drone instrument that runs in the browser
https://philipeaso.com— Major open problem in percolation theory potentially solved with ChatGPT
https://doi.org— A Testable Quantum-Biological Blueprint for Consciousness
https://openevidence.com— OpenEvidence
https://kubelize.me— Kubelize – Free tool to manage multiple Kubernetes clusters
https://aiagentnotes.com— Sparknotes for your agents. Try for free
https://jo-lang.org— Jo: A statically typed language that targets Ruby
https://orchestra-automation.com— Built a desktop scraping tool that generates Playwright code for you-free beta
https://lihn.fr— Lihn – AI prospecting agent for freelancers, quick setup, <€20/mo
https://tus.io— Tus: Open protocol for resumable uploads built on HTTP
https://therealmacsteel.github.io— SteelWorks, a free-first autonomous business OS
https://rezontree.com— Crowdsource agents for reasoning, reward top. A live Experiment
https://reazontree.com— Crowdsource agents for reasoning, reward top. A live Experiment
https://phoenixdkim.org— Call for Testing: PhoenixDKIM, A security-focused DKIM milter
https://hermes-agent.org— Hermes Agent – Open-Source AI Agent with Persistent Memory
https://sudoreport.com— Sudo Report – a Drudge Report for builder/startup/AI news
https://openrouter.ai— OpenRouter: The Unified Interface for LLMs
https://honestprivacypolicies.org— Honest Privacy Policies – We Read the Fine Print So You Don't Have To
+ 227 more verified launches in full dataset...
Key Launch Stats (Show HN Open-Source Repositories — June 2026)
During June 2026, a total of 267 product launches were recorded in this category up to 2026-06-30.
Here is a quick look at launch activity and naming characteristics:
- Total Launches: 267 domains
- Busiest Launch Day: 2026-06-30 (17 launches)
- Average Domain Name Length: 9.6 characters
- Shortest Domain: eu.org
- Longest Domain: open-semantic-interchange.org
- Clean / Single-Word Domains: 88.4%
- Common Name Prefixes: open (15), ai (5), get (3), my (2), use (2)
- Common Keywords: ai (82), app (34), ui (31), agent (31), dev (23)
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.