
Buy a prompt that already works - or sell the ones you have perfected.
Buy a prompt that already works - or sell the ones you have perfected.
CustomGPT OS records 18,928,488 monthly visits with +5.9% month-over-month growth and Paid pricing. DocumentPro records 1,129 monthly visits with -5.1% growth and Freemium, Paid, Contact for Pricing pricing.

Embeddable AI document extraction API for software platforms
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | gumroad.com | documentpro.ai |
| Pricing Model | Paid | Freemium, Paid, Contact for Pricing |
| Monthly Visits | 18.93M (18,928,488) | 1.13K (1,129) |
| MoM Traffic Delta | +1.06M (+5.9%) | -61 (-5.1%) |
| Primary Market & Share | 🇺🇸 United States (30.9%) | 🇺🇸 United States (86.1%) |
| Direct Visits / mo | 8.17M | 441 |
| User Rating | 3.8 | 4.2 |
| Supported Platforms | Website | Website |

A Notion-based operating system for building, organizing and monetizing Custom GPTs
Keeps tutorials, use cases and templates organized so you can reuse your best resources instead of starting from scratch every time.
A dedicated space to generate, capture and revisit Custom GPT ideas so promising concepts never get lost in scattered notes.
A structured build pipeline plus version tracking so you can iterate on a GPT and safely roll back or compare earlier versions.
One central view that lists and manages every active GPT you run, removing the need to hunt through separate tools or bookmarks.

Embeddable AI document extraction API for software platforms
AI reads every field, line item and table across invoices, orders, tax forms and scans without you building templates or maintaining per-supplier rules.
Import documents from email, Google Drive or API upload, then export results through webhooks, Excel downloads or accounting integrations such as QuickBooks.
Add database lookups and matching, flag records for human review, edit and approve data — covering the full workflow, not just parsing.
Advertises 98% extraction accuracy and support for 50+ languages, with options to route work across leading frontier models.

Buy a prompt that already works - or sell the ones you have perfected.
Buy a prompt that already works - or sell the ones you have perfected.

AI agents that run document-heavy business processes end to end

Free / Open-sourceMarketplace to find, hire, or build AI agents for real work
Free / Open-sourceMarketplace to find, hire, or build AI agents for real work

OCR and multi-modal document extraction APIs with built-in fraud detection

Agentic document platform that turns messy PDFs into LLM-ready structured data
Agentic document platform that turns messy PDFs into LLM-ready structured data
Free / Open-sourceFree, community-curated AI prompt library for ChatGPT, Claude and Gemini
Free / Open-sourceFree, community-curated AI prompt library for ChatGPT, Claude and Gemini
REST API to convert, edit and extract data from PDFs

High-precision document parsing and structured extraction API
High-precision document parsing and structured extraction API

AI document extraction and AI spend control for enterprises

AI-powered data extraction from invoices, IDs, receipts and any business document
AI-powered data extraction from invoices, IDs, receipts and any business document

Free / Open-sourceA hand-curated AI tool catalog built for makers and small businesses
Free / Open-sourceA hand-curated AI tool catalog built for makers and small businesses

Free / Open-sourceDiscover apps and websites built with Lovable
Free / Open-sourceDiscover apps and websites built with Lovable