Free developer tools built for speed and privacy.
Browse free utilities for developers, founders, and operators. All tools run in your browser - your data stays private.
JSON Tools
View all JSON tools →JSON Formatter
Prettify, minify, and format JSON with custom indentation.
JSON Validator
Validate JSON syntax and find errors with detailed messages.
JSON to CSV
Convert JSON arrays to CSV format instantly.
JSON Diff
Compare two JSON documents and find differences.
JSON Schema
Generate JSON Schema from sample data.
Dev Tools
Data Tools
YC Companies
Search, filter, and export every YC company across all batches, industries, and regions.
More tools in the pipeline
Deeper YC benchmarks, startup hiring insights, and AI infra benchmarks coming soon.
Founders Tools
View all founder tools →GTM Channel Analyzer
Score and rank 24 go-to-market channels based on your startup's specific situation. Get a prioritized roadmap for customer acquisition.
More founder tools
Pricing calculator, runway planner, TAM/SAM/SOM calculator, and competitive analysis templates coming soon.