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AI-powered card management & CRM for Taiwan sales. Scan cards, score opportunities, research companies, auto-draft outreach emails & MOU/NDA. Free.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.
Website, pricing, platforms and company facts side by side.
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| Website | card2gold.com | diffyn.com |
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| Company | Startup from Taiwan · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Card2Gold is an AI-powered business-card and CRM platform built for sales professionals in Taiwan. Batch-scan up to 20 cards with multilingual OCR, then get a 0 to 100 AI opportunity score for each contact so you know who to follow up first. For any company, it runs a 5-source background check...
No description of Diffyn yet.
What each product offers, as listed by its team.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Card2Gold and Diffyn.
Card2Gold's answer
Most business-card apps stop at capturing contact details. Card2Gold turns each card into an actionable sales opportunity: it adds a 0-to-100 AI opportunity score, runs a 5-source company background check (government registry, court records, social, website and news), auto-drafts outreach emails and NDAs, and manages the whole relationship in a built-in CRM. It is the only tool that completes this entire workflow for the Taiwan market.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Card2Gold's answer
Scanners like CamCard or Sansan mainly digitize contact info. Card2Gold does that and then tells you which leads are worth pursuing, researches their companies using Taiwan government and court data, drafts the first outreach email, and tracks the deal through a 4-stage pipeline. One tool replaces a scanner, a research analyst and a CRM. It is built for Taiwan, supports 7 languages, and starts free.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Card2Gold's answer
React and Vite on the front end; Node.js, Express and PostgreSQL on the back end; Google Gemini for OCR, opportunity analysis and document generation; Taiwan government (GCIS) open data and court-judgment data for company research; ECPay for local payments.
Diffyn's answer:
React, Next.js, POSTGRESQL
Card2Gold's answer
Sales professionals, business developers and SME owners in Taiwan who collect large numbers of business cards at trade shows and meetings and need to turn them into qualified leads and managed relationships.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Card2Gold's answer
Card2Gold was created by Charles Tu, a former IPO-company general counsel with 15 years of cross-border (US/China/Taiwan) legal and patent-litigation experience. He saw that salespeople collect stacks of business cards that end up forgotten in a drawer, and that Taiwan's public data (business registry, court judgments, news) could be combined with AI to judge in seconds whether a company is worth pursuing. Card2Gold productizes that entire workflow.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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