Cosmos

What it does

Cosmos is an operating system "construction kit". Build your own OS using managed languages such as C#, VB.NET, and more! - CosmosOS/Cosmos

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  Cosmos2025 · github.com · ▲114

  Cosmos is a iOS music player totally free and open-source

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  Zazu2017 · zazuapp.org · ▲193

  Open source launcher, an alternative to Alfred

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  OpenMCT by NASA2016 · nasa.github.io · ▲86

  A web based mission control framework

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  OSv2014 · osv.io · ▲63

  Free Open Source OS for Cloud-Based Startups

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  Azure Cosmos DB2017 · learn.microsoft.com · ▲2

  Microsoft's globally distributed, multi-model database

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  Cosmic-lightFeb 2026 · github.com · ▲84

  A stunning Dynamic Island Control Center for Windows

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  /dev/null▲482

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

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  Talanoa▲343

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

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  Amazon Go▲1,578

  Amazon stores with no lines or checkout 🛍

  AI · 2016 · amazon.com

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  Gomix▲842

  The easiest way to build the app or bot of your dreams

  AI · 2016

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  Slack Video Calls▲773

  Talking face-to-face with your team is just one click away

  Work · 2016 · slack.com

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  Auto-Layout for Sketch▲666

  Responsive design for Sketch

  Work · 2016 · animaapp.github.io

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  CakeResume v2 - Online Resume Builder▲662

  What's your workplace flavor? Join 10M+ users and take the free personality test to find out. Discover your workplace strengths and ideal career path in under 3 minutes with our CPTI™ assessment, based on the Myers-Briggs framework.

  Dev tools · 2016 · cake.me

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  Viral Loops for Startups▲656

  Virality for startups made easy 💪

  Growth · 2016 · viral-loops.com