
IndexFree
Free SEO and rapid index readiness tools
What it does
Run a free rapid index checker to review URL readiness, crawl signals, SEO blockers, and IndexNow options. No signup or saved user prIndexFree is a free privacy-first SEO and indexing readiness platform. Check URL crawlability, robots.txt, noindex, canonical tags, metadata, sitemap signals, schema, redirects, headings, image alt text, HTTPS, mobile viewport, URL ping signals, backlink opportunities, and site audit issues with no signup or saved user profile.ofile.
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- CFCrawlie – Free open-source SEO audit tool for humans and agentsJun 2026 · github.com · ▲20
With AI, it's faster than ever to ship a marketing site... but most of what gets generated is slop that was never built to be found. Plus the tools meant to catch that fall short: most SEO auditors cost money, don't play nicely with your agents, or tell you what's wrong without telling you how to actually rank for SEO and GEO (Generative Engine Optimization: being cited by AI search like ChatGPT, Perplexity, and Google AI Overviews). crawlie fixes that! It's 100% free, it's local-first, it's agent-native (MCP baked in!), and every issue it finds comes with why it matters and how to fix it.
- FAFastIndex, an open-source search engine indexation tool2024 · github.com · ▲22
There's a lot of paid search engine indexation tools out there and I wanted to create my own. Been working as an engineer for over a decade now and my open-source contribution has always been something I wanted to do. Thus I decided to create FastIndex, an open-source search engine indexation alternative to paid solutions such as TagParrot, URLMonitor, Omega Indexer and many more. Source: https://github.com/maurocasas/fastindex Wiki: https://github.com/maurocasas/fastindex/wiki
SEO & GEO CheckerJul 2026 · seo.studio4any.com · ▲3Enter your URL and get your score and fixes — free.


More dev tools this month
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The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

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 · 2d ago · opentrailpaper.com

Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
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
- FM
Dev tools · May 2026 · github.com