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Percival is a declarative data query and visualization language.

Which is more popular?
Based on our record, Percival seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | quickfix.ai | percival.ink |
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| Platforms | — | |
| Company | Startup from the Netherlands | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Quickfix AI is a browser extension that writes replies for you using AI. Click once and get a perfect reply. No typing needed. It works on every website. Gmail, LinkedIn, Reddit, Slack, Zendesk, customer support tools, social media, and more. One extension for all your replies. Using it is...
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What each product offers, as listed by its team.


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COMPLIMENTED HYPE BEAST | PARFUMS DE MARLY PERCIVAL FRAGRANCE REVIEW
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Recommendations tracked on public social media and blogs since March 2021.


Tracking Quickfix.ai since Nov 2025.
I struggle to understand the Clojure/Datomic dialect, but I agree generally. I recommend Percival for playing around with Datalog in a friendly notebook environment online: https://percival.ink/ Although there’s no “ANSI SQL” equivalent... - Source: Hacker News / over 1 year ago
You could theoretically use Datalog anywhere you're currently using a SELECT SQL statement - it's a declarative way to produce a set of tuples given some existing sets of tuples. But, Datalog is much better at deductive reasoning... - Source: Hacker News / almost 4 years ago
I haven't written a parser with Chumsky, bit I've played with a little one a bit if you wanna see an example syntax. The error reporting for this project is implemented with `ariadne` which is also really slick. Parser:... - Source: Hacker News / over 4 years ago
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