Razzia Cloud — Quiz Platform for Events

What it does

Host engaging real-time quizzes for your events. Self-host for free or get a fully managed cloud instance in seconds.

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  Hi.Events2024 · ▲501

  Open-source alternative to Eventbrite & Tito

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  Chroma Cloud – serverless search database for AI2025 · trychroma.com · ▲93

  Hey HN - I’m Jeff, co-founder of Chroma. In December of 2022, I was scrolling Twitter in the wee-hours of the morning holding my then-newborn daughter. ChatGPT had launched, and we were all figuring out what this technology was and how to make it useful. Developers were using retrieval to bring their data to the models - and so I DM’d every person who had tweeted about “embeddings” in the entire month of December. (it was only 120 people!) I saw then how AI was going to need to search to all the world’s information to build useful and reliable applications. Anton Troynikov and I started…

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  Qzzr2014 · ▲68

  Make engaging quizzes for your site or blog.

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  Quizzoria7d ago · codeberg.org · ▲2

  Free, open source quiz platform for classrooms and events

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  TenkaCloudJul 2026 · tenkacloud.com · ▲14

  Open-source cloud competitions on real AWS accounts

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  Quezzer2025 · ▲8

  Unique Quiz SaaS: Real-time quizzes, scores & leaderboards

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  Dograh▲592

  The open source VAPI alternative

  Dev tools · 26d ago · dograh.com

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  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 21d ago · meridiona.com

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  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 12d ago · x1.new

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  Open-Source eInk Bike Computer▲412

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 3d ago · opentrailpaper.com

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  Nuphos▲380

  The AI-Native DevOps Workspace.

  Dev tools · 25d ago · nuphos.ai

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  Lettertrace▲375

  Track your AI visibility for free (using your own API keys!)

  Dev tools · 26d ago · lettertrace.com

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  Brew ▲905

  Like Claude design for email marketing

  AI · May 2026 · brew.new

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  Kilo Code for VS Code▲897

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

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  StoreClaw▲805

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

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  PollyReach▲796

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

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  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

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  Files.md – Open-source alternative to Obsidian▲730

  Dev tools · May 2026 · github.com