CustomGPT OS records 18,928,488 monthly visits with +5.9% month-over-month growth and Paid pricing. LightPDF records 1,742,568 monthly visits with -15.3% growth and Freemium pricing.
A Notion-based operating system for building, organizing and monetizing Custom GPTs
Free AI-powered PDF editor, converter and reader for every device
| Dimension / Metric | | |
|---|---|---|
| Official Domain | gumroad.com | lightpdf.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.93M (18,928,488) | 1.74M (1,742,568) |
| MoM Traffic Delta | +1.06M (+5.9%) | -314.58K (-15.3%) |
| Primary Market & Share | 🇺🇸 United States (30.9%) | 🇮🇳 India (24.9%) |
| Direct Visits / mo | 8.17M | 442.07K |
| 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.
Free AI-powered PDF editor, converter and reader for every device
Upload a PDF and ask questions in natural language, follow up on details and see which passages the answers came from. A separate chat mode works with YouTube videos.
Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact.
Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically.
Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.
Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities.
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.
Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.
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
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.
