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Business documents with memory. Profile once and every invoice, quote and proposal comes out personalised.

Website, pricing, platforms and company facts side by side.
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| Website | opalstack.com | vizivo.ai |
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| Company | — | Startup from the United Kingdom · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Opalstack yet.
Vizivo is an AI-powered document generator built for UK small businesses. Most AI tools start from zero every conversation. You re-explain your rates, your VAT position, your audience and your tone every single time. Vizivo doesn't. You profile your business once (or simply paste your website and...
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As answered by people managing Opalstack and Vizivo.
Vizivo's answer:
Business Memory. You profile your business once, or paste your website and Vizivo reads it, and from then on every document is written with your rates, VAT position, services and tone already in place. Most AI writing tools start from an empty context every session, so you re-explain your business each time. Vizivo also finishes the job: documents come out as formatted PDF or Word files, not as text in a chat window you still have to lay out.
Vizivo's answer:
If you need one-off text, general AI chat is cheaper and more flexible, and you should use that. Vizivo is for the documents a UK small business produces repeatedly: invoices, quotes, proposals, business plans, terms and conditions, privacy policies.
Three things differ. It remembers your business between documents. It applies UK conventions by default, including VAT-aware totals, British English and UK legal norms, rather than US templates you adapt afterwards. And documents connect, so an accepted quote becomes the matching invoice with the totals recalculated.
Vizivo's answer:
UK small businesses: sole traders, freelancers, consultants and small agencies. Anyone who writes their own invoices, quotes, proposals and policies instead of having a finance team, a lawyer or a marketing department.
Newly formed limited companies especially, because incorporation is immediately followed by needing a business plan, terms and conditions, a privacy policy and a first invoice.
Vizivo's answer:
Vizivo started from a straightforward frustration: general AI tools are good at writing and bad at remembering. Every session began by re-explaining the same business details, and the output still needed reformatting before it could go to a client.
Vizivo was built around the opposite idea. Tell it about your business once, and it produces finished documents from then on. It is built and run in the UK by Vizivo Technologies Ltd, company number 17345034, designed for UK conventions rather than a US product with the currency switched.
Share your experience with using Opalstack and Vizivo. For example, how are they different and which one is better?