AI Stack DB

Independent reference pages on AI and SaaS productivity tools. Source-backed, opinion-light, vendor-neutral. Each tool page is sourced from the vendor's own product and pricing pages on the date shown. Comparison pages contrast two tools using the same dimensions and end with decision rules, not a winner declaration.

How this database works

This is a hand-built reference database, not an automated feed or a review-score aggregator. Every page is written from primary sources and organized so you can answer a buying question quickly: what a tool actually does, who it is for, what it costs, and what the credible alternatives are.

The database is organized into three kinds of pages:

Category hubs group tools by the job you are trying to do — writing, coding, research, productivity, design, video, and voice — and explain how to narrow a shortlist within that job.
Tool pages give one structured reference per tool: what it does, primary use cases, intended audience, pricing model and free-plan status, supported platforms, alternatives, caveats, and the official sources each fact is drawn from.
Comparison pages put two tools side by side across the same dimensions and end with explicit decision rules — when each tool is the better fit — rather than crowning a single winner.

How pages are selected and sourced

Tools are included by category, not by who pays — there are no affiliate links and no sponsored placements anywhere on the site. A page only goes live after it passes the project's published quality gate: every factual claim must trace to an official vendor source, and pricing or quota figures are quoted only when the official pricing page was read in full on the date recorded on the page. When a fact cannot be verified, the page says so and points you to the vendor's own site instead of guessing. The full standard is documented in the Editorial Policy, and the way AI is used in research and drafting is disclosed in the AI Disclosure and Source Policy.

How to use it

Start from the job. Open the category hub that matches what you are trying to do and use it to build a shortlist.
Read the tool page for each candidate to check fit, pricing model, platforms, and caveats against your own constraints.
Compare your two finalists on the head-to-head page and apply the decision rules to your situation.

Prices, plans, and features change often. Treat every figure here as a starting point dated to when it was last verified, and reconfirm on the vendor's official site before you buy. Found something wrong? The Contact page explains how to send a source-backed correction.

Tools

ClaudeSource-backed reference page · last verified per the page footer.
JasperSource-backed reference page · last verified per the page footer.
Notion AISource-backed reference page · last verified per the page footer.
Grammarly AISource-backed reference page · last verified per the page footer.
Github CopilotSource-backed reference page · last verified per the page footer.
CursorSource-backed reference page · last verified per the page footer.
GeminiSource-backed reference page · last verified per the page footer.
Microsoft CopilotSource-backed reference page · last verified per the page footer.
Replit AISource-backed reference page · last verified per the page footer.
Zapier AISource-backed reference page · last verified per the page footer.
TabnineSource-backed reference page · last verified per the page footer.
Figma AISource-backed reference page · last verified per the page footer.
RunwaySource-backed reference page · last verified per the page footer.
SynthesiaSource-backed reference page · last verified per the page footer.
DescriptSource-backed reference page · last verified per the page footer.
ElevenlabsSource-backed reference page · last verified per the page footer.
PerplexitySource-backed reference page · last verified per the page footer.
ChatgptSource-backed reference page · last verified per the page footer.

Comparisons

Notion AI vs Grammarly AIHead-to-head comparison with decision rules.
Claude vs JasperHead-to-head comparison with decision rules.
Grammarly AI vs JasperHead-to-head comparison with decision rules.
Claude vs Github CopilotHead-to-head comparison with decision rules.
Github Copilot vs Grammarly AIHead-to-head comparison with decision rules.
Github Copilot vs JasperHead-to-head comparison with decision rules.
Claude vs Grammarly AIHead-to-head comparison with decision rules.
Claude vs Notion AIHead-to-head comparison with decision rules.
Notion AI vs JasperHead-to-head comparison with decision rules.
Notion AI vs Github CopilotHead-to-head comparison with decision rules.
Cursor vs Github CopilotHead-to-head comparison with decision rules.
Tabnine vs Github CopilotHead-to-head comparison with decision rules.
Tabnine vs CursorHead-to-head comparison with decision rules.
Tabnine vs Replit AIHead-to-head comparison with decision rules.
Cursor vs ClaudeHead-to-head comparison with decision rules.
Claude vs GeminiHead-to-head comparison with decision rules.
Gemini vs Microsoft CopilotHead-to-head comparison with decision rules.
Cursor vs Replit AIHead-to-head comparison with decision rules.
Claude vs Microsoft CopilotHead-to-head comparison with decision rules.
Github Copilot vs Replit AIHead-to-head comparison with decision rules.
Cursor vs JasperHead-to-head comparison with decision rules.
Cursor vs Notion AIHead-to-head comparison with decision rules.
Replit AI vs JasperHead-to-head comparison with decision rules.
Microsoft Copilot vs JasperHead-to-head comparison with decision rules.
Notion AI vs Replit AIHead-to-head comparison with decision rules.
Grammarly AI vs Replit AIHead-to-head comparison with decision rules.
Notion AI vs Microsoft CopilotHead-to-head comparison with decision rules.
Grammarly AI vs Microsoft CopilotHead-to-head comparison with decision rules.
Github Copilot vs Microsoft CopilotHead-to-head comparison with decision rules.
Cursor vs Microsoft CopilotHead-to-head comparison with decision rules.
Gemini vs Notion AIHead-to-head comparison with decision rules.
Github Copilot vs GeminiHead-to-head comparison with decision rules.
Gemini vs JasperHead-to-head comparison with decision rules.
Grammarly AI vs CursorHead-to-head comparison with decision rules.
Claude vs Replit AIHead-to-head comparison with decision rules.
Gemini vs Grammarly AIHead-to-head comparison with decision rules.
Gemini vs Replit AIHead-to-head comparison with decision rules.
Zapier AI vs Microsoft CopilotHead-to-head comparison with decision rules.
Zapier AI vs Notion AIHead-to-head comparison with decision rules.
Zapier AI vs Github CopilotHead-to-head comparison with decision rules.
Zapier AI vs GeminiHead-to-head comparison with decision rules.
Zapier AI vs ClaudeHead-to-head comparison with decision rules.
Zapier AI vs CursorHead-to-head comparison with decision rules.
Zapier AI vs Grammarly AIHead-to-head comparison with decision rules.
Zapier AI vs JasperHead-to-head comparison with decision rules.
Zapier AI vs Replit AIHead-to-head comparison with decision rules.
Runway vs SynthesiaHead-to-head comparison with decision rules.
Chatgpt vs ClaudeHead-to-head comparison with decision rules.
Chatgpt vs GeminiHead-to-head comparison with decision rules.
Chatgpt vs PerplexityHead-to-head comparison with decision rules.
Chatgpt vs Microsoft CopilotHead-to-head comparison with decision rules.

About this site

AboutWhat this site covers, who runs it, and how pages reach publication.
ContactHow to reach the operator for questions, corrections, and rights-holder requests.
Privacy policyWhat data the site collects, how analytics and advertising cookies are handled, and your choices.
Editorial policyHow pages are researched, sourced, fact-checked, corrected, and kept current.
AI disclosure and source policyHow AI is used in producing pages and how every factual claim is sourced.

Tool shortlist to decision route

The lists above are organized so one buying question moves through the site in a straight line. Use this order to get from “which tools should I even consider?” to a confident pick:

Start at a category hub for the job you are doing — such as the writing, coding, or assistant hubs in the Categories list above — and use it to draw up a shortlist within that job.
Open each candidate’s tool page from the Tools list to check what it does, who it is for, its pricing model and free-plan status, supported platforms, and caveats against your own constraints.
Send your two finalists to a comparison page from the Comparisons list to read them side by side on the same dimensions and apply the decision rules to your situation.
Run the decision yourself with the AI Tool Evaluation Kit below — a repeatable checklist that turns the shortlist into a documented choice for your job rather than a generic ranking.

Jump straight to a category hub to start your shortlist:

Discovery and trust files

These files help readers and automated crawlers navigate and verify this database. Each is generated from the same source data as the pages above.

Human sitemapA readable list of every page on the site.
RSS feedFollow new and updated pages as they publish.
JSON FeedThe same feed in JSON Feed format for modern readers.
AI crawler indexA plain-text index of the site for AI and search crawlers.
Operator noteA short human-readable note about who maintains the site.

AI Stack DB resource · vendor-neutral evaluation kit

Choosing an AI tool shouldn't mean trusting a “top 10” post that's already stale. Prices and model lineups shift constantly, and the right pick depends on the one job you need done. The AI Tool Evaluation Kit gives you a repeatable method instead of a listicle: name the job, prove it on your own task twice, verify the volatile details (prices, plans, models) on each vendor's official site, then decide against what you already do today.

Get the AI Tool Evaluation Kit →

It is an external paid product on Gumroad, published by AI Stack DB (LumoMate). It is not an affiliate link, not sponsored, and listing it here is not an endorsement of any tool named on this page. It is a reusable evaluation method, not professional advice; confirm current prices and capabilities on each vendor's official site.