Doing one of these because I get more from reading what others are building than from any newsletter.

I ll start.

Hey Product Hunt,
Solo dev here. This started with a simple problem: I needed SEO tools and couldn't justify $99 $399/month for them. So I started building my own.
Somewhere around tool #20, I noticed something that bothered me about the tools I was replacing. A lot of them show you numbers search volume, difficulty scores, "AI visibility" without ever telling you where those numbers come from. Sometimes it's real API data. Sometimes it's an AI estimate wearing a confident font. You can't tell the difference, and I think that's the point.
So I made one rule for myself: every tool has to wear a badge saying what it actually is.
Live real data from real APIs
Live + AI real data, AI analysis on top
Generation AI wrote this, treat it like a draft
Analysis AI opinion, not measurement
If a tool can't get real data (say, you haven't added an API key), it refuses to fake it. It literally returns an error saying "I won't estimate this and pretend it's live." I lost count of how many times I was tempted to soften that. I didn't.
115+ tools later, it's a full platform: keyword research, content generation, technical audits, an AI site auditor, and the thing I'm most excited about a monitor that tracks whether ChatGPT and Perplexity actually mention your brand, with public scorecards anyone can check.
Free tier is 5 generations a day, no card. If you bring your own API keys, it's basically unlimited you pay OpenAI/Anthropic directly instead of paying me a markup.
It's seofragments.com if you want to poke at it.
Two honest questions for this community:
1. Do honesty badges actually matter to you, or do users just want the number and don't care where it came from?
2. If you've built something with a "principled" constraint that made your life harder did it pay off, or did nobody notice?
I'll answer everything in the comments.

Hey everyone!

Today I'm excited to introduce you to RedFlagClients.com, a tool I built to solve a problem I experienced firsthand.

Hi everyone!

I just launched Isoline, a browser-based studio for designing procedural 2D and 3D geometry using Signed Distance Functions (SDFs).

Instead of writing GLSL by hand, you build a visual node graph that compiles directly into shader code. You can preview contours, ray-march the scene, and export GLSL or STL for further use.

The project has been a self-directed engineering effort over the past several months, and today is its first public launch.

Hi,

A few months ago I started using OpenWolf, a project that gives Claude Code a persistent "second brain" by indexing the project, tracking context, and remembering previous decisions.

I really liked the idea, but after using it on larger and longer-lived projects I ran into a few practical problems:

So I started building Focusel - a desktop workspace that brings everything together with AI-powered roadmaps, flashcards, mind maps, and distraction-free learning.

Still early, and I'd love honest feedback from fellow makers.

Hi everyone!

I'm an indie developer from Italy and after months of work I'm finally launching my app, Clino, on Product Hunt.

Launch day is scheduled for Monday, July 13.

Over the last year, we kept seeing the same pattern with companies expanding into Southeast Asia. They'd tell us they needed to hire more customer support. But after digging a little deeper, the problem usually wasn't ticket volume.

It was fragmentation.

• One customer messages on WhatsApp.

• Another uses LINE.

• Vietnamese customers only want to use Zalo.

• Website visitors use live chat.

• Every market speaks a different language.