10 Quiet Tools Powering the Best Entrepreneurs Right Now

✨Hey there, tech stackers! 🚀

🧠 Special Edition: 10 Under-the-Radar Tools Used by Top Founders

We’ve now featured dozens of SaaS founders, builders, creators, investors, and operators—everyone from John Rush and Arnaud Belinga to Steven Cravotta, Wes Winder, Grant Stimmel, Litan Yahav, and Nathan Gotch.

Across these stacks, we’ve noticed a quiet pattern: some of the most valuable tools aren’t the flashy ones. They’re not Notion, Slack, Stripe, or Google. They’re purpose-built, often indie, sometimes obscure—and they’re what top operators actually rely on.

Here’s a roundup of 10 tools that keep showing up across our newsletter issues that you might not see on your average product hunt leaderboard 👇

1. 📈 Posthog – Product Analytics with Session Replay

Used by: Ömer Eker (Overbooked)

Posthog gives solo builders deep visibility into user behavior with heatmaps, funnels, and session replays—all without needing a huge data team.

Why it stands out:

• Open-source and privacy-friendly

• Session replay built-in

• Powerful for testing early UX decisions

2. 🧠 Rankability – Content Optimization

Used by: Nathan Gotch (SEO agency founder)

A tactical tool to structure and optimize content that actually ranks. Not just score-checking—real guidance.

3. 🎥 Tella – Personalized Video Messaging

Used by: Arnaud Belinga (Breakcold)

A modern async video platform that’s simple, polished, and perfect for outbound sales or onboarding. Lighter and more on-brand than Loom.

4. 📊 Knack – No-Code Database

Used by: Ömer Eker

Used as a relational database/CRM hybrid to track membership, commitments, and internal org data. Powerful if you’re running a community or investing group.

5. 🧪 SEOTesting – A/B Testing for SEO

Used by: Nathan Gotch

Lets SEOs run data-driven experiments—title tags, meta descriptions, content refreshes—and measure what really works. Game-changer for content ops.

6. 📋 MagicPatterns – AI Wireframe Generator

Used by: AI SaaS builders in our fast-ship stacks

Turns rough ideas into working UI wireframes instantly. Helps you validate UX before writing a line of code.

7. 🛠️ ListingBott – SEO Submission Automation

Used by: John Rush

Automates submission of your SaaS to hundreds of directories. A behind-the-scenes lever for link building and domain rating growth.

8. 📩 Resend – Transactional Email for Devs

Used by: Multiple AI SaaS founders (e.g. self.so, Overbooked)

Built for modern dev teams. Great DX, clean API, and simple to integrate with Next.js or other JAMstack builds.

9. 🧠 Fibery – Internal Tools & Knowledge Base

Used by: John Rush

Fibery blends docs, databases, task management, and workflows into one flexible internal ops platform.

Why it stands out:

• Replaces Notion + Airtable + Trello in one place

• Easily customizable for product or internal team ops

• Used to run internal tooling across multiple products

10. 📦 FloatUI – Tailwind UI Component Kit

Used by: John Rush (MarsX, multiple SaaS tools)

Not just a UI kit—FloatUI is a design accelerator for anyone working in Tailwind. Beautiful components, smart defaults, and high iteration speed.

🧠 TL;DR – 10 Quietly Powerful Tools You Should Know

Keep these tools bookmarked. When you’re ready to build smarter, simpler, and faster—these are the ones quietly doing the heavy lifting.

Always remember,

Explore broadly

Not just SaaS or tech, but multiple disciplines.

Share ideas selflessly

Be willing to share your knowledge. Keep giving and it will come back to you.

Your stack is not going to save you.

You are. So just build.

Go crush it,

Mark

Tech Stacks is human-compiled, edited, and designed.