Sérgio Rebelo’s Playground

A small collection of experiments, tools and interactive mini apps.

Explore, click around, break things, learn something and have fun.

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Gerador de Queries ATS PT

Build search queries that make it easier to find relevant job postings across different recruiting platforms.

Interface in Portuguese.
Results work on international job boards.

Search across multiple ATS job boards
Filters by location and job type
Platform specific query templates
Easy to use interface

Open ATS query generator

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Tech Events EN

Find information about the best Tech Events in Portugal and Europe.

Interface in English.

Conferences, Meetups, Hackatons and more
Search events by date, location or price
Curated selection of events
News, reviews and articles

Coming soon

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Gerador de Ditados

Manage and share original and funny "Ditados".

Original and funny "Ditados" generation based on a simple formula
Growing words list
Gender and verbs consistency
Share your creations with unique URLs

Coming soon

🎨

Color Palette Generator

Create, try and export color palettes for your projects.

Generation of complementar palettes
Contrast and Accessibility analysis
Export in multiple formats
Library with popular palettes

Coming soon

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JSON validator and formatter

Evaluates, analises and formats data structures in JSON.

JSON sintax validation/li>
Format and minifies
Analysis of data structures
Converts to other formats

Coming soon

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API Request Builder

HTTP Client to test your API

Supports all REST interfaces
Data Privacy
Local history

Coming soon