31 tools available
Calculate and analyze the results of your A/B tests.
Test and debug API endpoints with a simple, privacy-focused tool that works offline.
Encode and decode text using Base64 encoding.
Create a beautiful, customizable public profile to share all your links in one place. Perfect for social media bios, email signatures, or business cards. Replace multiple links with one professional landing page that represents you online.
Inspect and analyze clipboard content in different formats including text, HTML, images, and more.
Visualize the power of compound interest over time with customizable accounts and automations.
Customer research platform for product-market fit assessment, survey creation, and feedback analysis.
Upload data and create visualizations with just a few clicks. Supports CSV files and various chart types.
Test your memory and math skills in this dual brain training game. Features three difficulty levels and multiple game modes.
Train your ESP abilities with this research-backed tool based on Russell Targ's work at Stanford Research Institute. Features a simple four-choice game with feedback and progress tracking.
Enhance your productivity with ambient noise and timed work sessions. Features a Pomodoro timer and customizable background sounds.
Preview HTML code and see the rendered output instantly.
Format and validate JSON data with ease.
Visualize your life in weeks with a beautiful grid calendar. See your past and future weeks at a glance.
Secure peer-to-peer messaging and file sharing without a server. Features real-time chat and file transfer using WebRTC.
Preview Markdown text and see the formatted output in real-time.
Create and preview Mermaid diagrams with real-time rendering of flowcharts, sequence diagrams, and more.
Real-time musical note detection using your microphone. Features a beautiful piano keyboard and musical staff visualization.
Generate secure passwords with customizable options. Completely in browser, we never see what you generated.
Integrated product planning workspace for feature prioritization, user story creation, and roadmap visualization.
Interactive Python interpreter in your browser. Includes numpy and other scientific libraries.
Generate QR codes from text or URLs.
Test and debug regular expressions in real-time.
Record your screen with optional webcam overlay. Features pause/resume functionality and downloadable recordings.
Style your screenshots with custom backgrounds, window decorations, and more.
Generate social media previews for any URL.
Comprehensive financial calculator for startup founders - CAC, LTV, burn rate, valuations, equity dilution and more.
Encode and decode URLs for safe transmission.
Transcribe audio files and recordings using AI. Supports file uploads and live recording.
A unique side-scrolling game where you control the character using voice input. Collect gems, avoid obstacles, and try to achieve the highest score.
Format and validate YAML data with ease.