Free Developer Tools

Self-assess your AI system against EU AI Act requirements.

Estimate monthly Claude or OpenAI API costs by model and usage.

Side-by-side pricing for Claude, GPT, and Gemini models.

Build cron expressions visually with presets and a field editor.

Paste logs from multiple sources and visualize a chronological timeline.

Calculate uptime percentages and allowed downtime for any SLA.

Build curl commands visually and copy them to your clipboard.

Check the SSL certificate of any domain instantly.

Look up DNS records for any domain.