Developer Tools
28 free, open tools built for developers. No sign-up required.
🔥 Popular right now
FLUX Image Generator
Type a prompt, get a photoreal image in seconds. Powered by Black Forest Labs FLUX.1-schnell on Hugging Face. No signup.
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Whisper Transcription
Drop an audio file, get a transcript. Whisper Large v3 Turbo via Hugging Face — 99 languages auto-detected.
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Vision Q&A
Upload any image and ask anything — "how many people?", "what does this chart show?", "read the text". Powered by Google Gemma 3 via Ollama Cloud.
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LLM API Price Tracker
70+ LLM models, live pricing across Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, xAI. Sortable, with daily historical snapshots.
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GPU / Mac Recommender
Pick a model + your minimum tokens/sec. Get the cheapest Mac M-series or NVIDIA / AMD GPU that runs it smoothly.
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LLM Hardware Checker
Detect your Mac or GPU and see which open-weight LLMs you can run smoothly — with tokens/sec estimates from 80+ measured benchmarks.
OpenFLUX Image Generator
Type a prompt, get a photoreal image in seconds. Powered by Black Forest Labs FLUX.1-schnell on Hugging Face. No signup.
Open tool →Whisper Transcription
Drop an audio file, get a transcript. Whisper Large v3 Turbo via Hugging Face — 99 languages auto-detected.
Open tool →Vision Q&A
Upload any image and ask anything — "how many people?", "what does this chart show?", "read the text". Powered by Google Gemma 3 via Ollama Cloud.
Open tool →
Sentiment & Emotion Classifier
Paste any text — get a 7-emotion breakdown (joy, anger, sadness, fear, surprise, disgust, neutral) with confidence bars.
Open tool →LLM API Price Tracker
70+ LLM models, live pricing across Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, xAI. Sortable, with daily historical snapshots.
Open tool →GPU / Mac Recommender
Pick a model + your minimum tokens/sec. Get the cheapest Mac M-series or NVIDIA / AMD GPU that runs it smoothly.
Open tool →
Self-Host vs API Calculator
Enter your workload. Get the cheapest API option vs cheapest viable hardware setup, break-even month, and 3-year TCO.
Open tool →LLM Hardware Checker
Detect your Mac or GPU and see which open-weight LLMs you can run smoothly — with tokens/sec estimates from 80+ measured benchmarks.
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LLM Pricing Calculator
Compare costs across 25+ AI models from Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, and xAI.
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AI Token Counter
Estimate token counts for GPT, Claude, and Gemini models. See character count, word count, and cost estimates.
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AI Model Comparison
Interactive comparison of 25+ AI models. Filter by features, compare context windows, pricing, and capabilities side by side.
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AI Agent Cost Simulator
Estimate the monthly API cost of running an AI agent. Configure models, turns, tool calls, and see how context growth impacts your bill.
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RAG Cost Calculator
Calculate the full cost of a RAG pipeline: document embedding, vector storage, and LLM generation.
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AI System Prompt Builder
Build effective system prompts step by step. Choose persona, tone, output format, and constraints for any AI model.
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AI Prompt Template Library
Browse 40+ curated prompt templates for coding, writing, data analysis, and more. Customize placeholders and copy for any AI model.
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AI Prompt Compressor
Compress and optimize AI prompts to reduce token usage. Remove filler words, shorten phrases, and see cost savings across models.
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AI API Key Detector
Scan code and config files for accidentally exposed API keys. Detects 15+ providers. 100% local.
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Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to plain text. Full Unicode support, runs in your browser.
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UUID Generator
Generate cryptographically random v4 UUIDs. Single or bulk generation up to 50 with one-click copy.
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JSON Formatter & Validator
Paste JSON to format, validate, and minify. Syntax highlighted output with error detection.
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JWT Decoder
Decode and inspect JSON Web Tokens — header, payload, signature, and expiration status.
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Color Converter
Convert colors between HEX, RGB, and HSL formats. Visual picker, complementary color, and copy buttons.
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HTTP Status Codes Reference
Complete HTTP status codes reference with descriptions, common use cases, and one-click copy.
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Regex Tester
Test regex patterns with live highlighting, match groups, and common pattern presets.
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Unix Timestamp Converter
Convert Unix timestamps to dates and back. Live clock, relative time, ISO 8601, UTC, and local formats.
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Cron Expression Builder
Build cron schedules visually with dropdowns, presets, human-readable descriptions, and next execution times.
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Git Command Reference
50+ essential Git commands organized by category. Search by what you want to do and copy with one click.
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Docker Compose Generator
Build docker-compose.yml visually. Presets for PostgreSQL, Redis, MongoDB, Nginx, and more.
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