# StackDen

> Curated AI and productivity tool directory — 170+ tools reviewed and organized by Sage the cat. Stack smarter, not harder.

StackDen is an independent tool directory at stackden.co that helps builders, creators, remote workers, and productivity-focused people discover the best AI tools and software. Every tool is hand-curated by Sage — no paid placements, no sponsored rankings, no affiliate bias in recommendations.

## What StackDen Is

StackDen is a searchable, filterable directory of 170+ tools across categories including AI writing, design, productivity, automation, finance, video, development, and more. Each tool listing includes pricing information (Free / Freemium / Paid), category tags, and whether it has earned a "Sage's Pick" designation for exceptional quality.

The site also includes The Arcade — a collection of free browser-based utility tools including an internet speed tester, Pomodoro focus timer, salary calculator, password generator, budget planner, typing speed trainer, and more.

## Who It's For

- Remote workers and freelancers building their productivity stack
- Entrepreneurs and founders looking for AI tools
- Creators and writers exploring AI writing assistants
- Developers and designers discovering design and dev tools
- Anyone trying to find the best free AI tools without wading through sponsored content

## Main Pages

- [Tool Directory](https://stackden.co/index.html): Browse and filter 170+ curated AI and productivity tools by category, pricing, and Sage's picks. Powered by live Airtable data.
- [Categories](https://stackden.co/categories.html): Browse tools organized by category — AI Writing, Design, Productivity, Automation, Finance, Video, Development, and more.
- [The Arcade](https://stackden.co/arcade.html): 11 free browser-based utility tools — no signup required.
- [Blog](https://stackden.co/blog.html): In-depth guides, tool comparisons, and stack-building advice from Sage.
- [About](https://stackden.co/about.html): About StackDen, its curation philosophy, and Sage.

## Arcade Tools (All Free, No Signup)

- [Speed Stack](https://stackden.co/arcade-speedtest.html): Real internet speed test — measures ping, download, and upload speed live in the browser. Includes downloadable proof image for employment verification.
- [Focus Forge](https://stackden.co/arcade-focus.html): Pomodoro timer with session tracking.
- [Salary Sensei](https://stackden.co/arcade-salary.html): Salary range calculator by role, experience, and location.
- [Budget Boss](https://stackden.co/arcade-budget.html): 50/30/20 budget calculator and visualizer.
- [Typing Dojo](https://stackden.co/arcade-typing.html): 60-second typing speed and accuracy trainer.
- [Password Forge](https://stackden.co/arcade-password.html): Secure password generator.
- [Wheel of Fate](https://stackden.co/arcade-wheel.html): Customizable decision spinner.
- [Random Picker](https://stackden.co/arcade-picker.html): Coin flip, dice roll, and number generator.
- [Tip Calculator](https://stackden.co/arcade-tip.html): Bill splitter with tip percentage.
- [Mood Matcher](https://stackden.co/arcade-mood.html): Tool recommendations based on how you're feeling.
- [Sage's Oracle](https://stackden.co/arcade-oracle.html): Random tool discovery from the full directory.

## Blog Posts

- [The 8 Best Free AI Writing Tools in 2026](https://stackden.co/blog-best-free-ai-writing-tools.html): Sage's tested roundup of ChatGPT, Claude, Perplexity, Notion AI, Copy.ai, Rytr, Gamma, and Writesonic — free tiers only.
- [How to Build a Productivity Stack That Actually Works](https://stackden.co/blog-build-your-productivity-stack.html): A framework covering the four layers of a solid stack — capture, plan, execute, and review.
- [ChatGPT vs Claude vs Gemini: An Honest 2026 Comparison](https://stackden.co/blog-chatgpt-vs-claude-vs-gemini.html): Side-by-side breakdown of writing quality, breadth, context handling, and free tier generosity.
- [The Remote Worker's AI Toolkit](https://stackden.co/blog-ai-tools-remote-workers.html): Essential and underrated tools for people working from anywhere, including internet speed testing, async video, and AI assistants.
- [Notion vs Obsidian vs Roam: The 2026 Note-Taking Showdown](https://stackden.co/blog-notion-vs-obsidian-vs-roam.html): Honest comparison of the three leading note-taking and PKM tools with a clear recommendation for each user type.

## Tool Categories Available

AI Writing, AI Image Generation, AI Video, AI Audio, Design, UI/UX, Productivity, Task Management, Note-Taking, Automation, No-Code, Finance, Analytics, Development, SEO, Social Media, Email, Communication, HR, Legal, Health, Education, Research

## Curation Philosophy

StackDen does not accept payment for tool placement or ranking. Sage's Pick designations are awarded based on quality, usefulness, and free tier generosity alone. The directory is updated regularly as new tools are released and evaluated.

## Contact and Feedback

Users can submit tool suggestions or feedback directly through the Sage widget on any page of the site (the pixel cat in the bottom-right corner). Submissions are reviewed by the StackDen team.

## Technical

- Site: https://stackden.co
- Sitemap: https://stackden.co/sitemap.xml
- Built with: Static HTML, Airtable API for tool data, GitHub Pages hosting
- Last updated: 2026-05-15