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CityGPT: Urban Odyssey is a narrative city-builder about impossible choices. Build your city tile by tile, shape the identity of each district, and juggle growth, pollution, public services, and political pressure as every month brings new events, crises, and hard trade-offs. Advisors push, voter blocs react, and your decisions ripple through a living newspaper and city chronicle, turning every run into a messy, personal story of urban survival. ---- V1.1 - added sound --- Above is the sensationalized description of this spreadsheet game with a frontend. Created by AI. Curated by @turnaround.

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Calculate room reverberation time (RT60) instantly with this free acoustic engineering tool. Use the Sabine formula to optimize audio spaces and studio acoustics.

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Generate custom Tailwind CSS color palettes for your web projects. Create, preview, and export color scales in JSON format for efficient UI design workflows.

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Easily create and optimize prompts for Midjourney and Stable Diffusion. Adjust token weights, manage syntax, and improve your text-to-image generation results.

Use our free web-based Cron expression generator to build and translate complex scheduler syntax into human-readable text for Linux and server tasks.

Easily generate precise Git commands for complex branch merges, interactive rebases, and conflict resolution workflows with our automated command builder.

Use this free CSS clamp() calculator to generate responsive font sizes. Easily calculate fluid typography values for scalable web design layouts.

Accurately count LLM tokens for GPT and Claude models. Analyze text length, visualize token distribution with color coding, and optimize your API prompts.

Clean your text instantly. Use our free tool to remove extra spaces, tabs, double line breaks, and leading/trailing whitespace from your documents online.

Preview your page titles and meta descriptions in search results. Check pixel width to prevent truncation and optimize your search engine click-through rate.

Convert raw JSON objects into typed TypeScript interfaces instantly. This free online developer tool helps you generate accurate code definitions for your apps.

Create, edit, and format Markdown tables easily with our visual generator. Copy clean syntax for GitHub, Reddit, or documentation sites instantly.

Optimize, structure, and refine your AI system prompts. Use this tool to format instructions for LLMs, improving output accuracy and model reliability.

Calculate your daily keto and paleo macronutrient goals instantly. Get precise net carb, protein, and fat breakdowns for effective weight loss and fat adaptation.

Calculate your annual freelance income based on hourly rates. Adjust for billable hours, weeks off, and tax expenses to estimate your net annual salary easily.

Easily extract specific columns from large CSV files with this free online tool. Select, reorder, and download customized datasets securely in your browser.

Securely decode JWT payloads locally in your browser. Parse JSON Web Token headers and data without sending sensitive information to any external server.

Use our precise business days calculator to determine working days between two dates. Exclude weekends and custom holidays with this fast, free online tool.

Use our free online JSON beautifier and formatter to clean, validate, and structure your minified JSON data instantly. Ensure readable, code-compliant JSON.

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Easily track, color-code, and visualize your visited countries with this free, interactive world map generator. Create custom travel maps instantly online.

Create custom tier lists online for free. Easily drag and drop images to rank items, customize tier labels, and export your completed tier list as a high-quality PNG image file directly in your browser.

Generate professional 301 permanent redirect rules for your Apache server. Easily create .htaccess code snippets for URL mapping, SEO link juice, and SEO.

Use this free online UTM link builder to create tracking URLs for social media campaigns. Easily append UTM parameters to track traffic in Google Analytics.

Optimize your video titles for higher click-through rates. Use this free YouTube Video Title Character Counter and live preview tool to avoid truncation.

Generate optimized, production-ready Dockerfiles for Node.js and Python applications instantly. Customize base images, port configurations, and dependencies.

Practice mindfulness with this guided deep breathing exercise timer. Featuring a rhythmic pulsating visual guide and calming ambient background sounds.

Easily calculate percentage change and percentage difference between two values with this free online calculator. Fast, accurate, and simple to use.

Convert text to natural sounding speech instantly with this free online text to speech voice reader. Features adjustable speed, pitch, and multi-language support.

Instantly calculate the estimated reading time for your blog posts, articles, and text. Customize words per minute settings for accurate reader engagement.

Easily visualize and parse complex EDI X12 files with our free syntax highlighter. Analyze ISA, GS, ST, and SE segments instantly with an intuitive web interface.

Instantly convert English text into fun emoji slang with this free online tool. Perfect for social media, messaging, and creative digital communication.

Calculate payment processing fees and reverse fees instantly. Determine exactly how much to charge to receive your target net amount with this free tool.

Use this free online tool to easily parse, decode, and build URL query parameters. Essential for developers debugging, constructing, or formatting URLs.

Create professional invoices for free with this online generator. Save, edit, and download PDFs directly in your browser. No sign-up, no upload, 100% private.