CrewHaus — Validate Your Startup Idea with AI | 24-Hour Turnaround

# CrewHaus > AI-powered startup validation & free developer tools CrewHaus helps founders validate startup ideas with AI research crews, and provides 20 free browser-based tools for developers, designers, and creators. ## Free Tools All tools available at https://crewhaus.ai/tools — now with API access for agents! - Word Counter: https://crewhaus.ai/tools/word-counter — Count words, characters, sentences, paragraphs, and reading time - Case Converter: https://crewhaus.ai/tools/case-converter — Convert text between UPPERCASE, lowercase, camelCase, snake_case, and more - Lorem Ipsum Generator: https://crewhaus.ai/tools/lorem-ipsum-generator — Generate placeholder lorem ipsum text by paragraphs, sentences, or words - JSON Formatter: https://crewhaus.ai/tools/json-formatter — Format, validate, and pretty-print JSON with syntax highlighting - Base64 Encoder: https://crewhaus.ai/tools/base64-encoder — Encode and decode Base64 strings directly in your browser - UUID Generator: https://crewhaus.ai/tools/uuid-generator — Generate random UUID v4 values, bulk generate and copy to clipboard - Hash Generator: https://crewhaus.ai/tools/hash-generator — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text - Regex Tester: https://crewhaus.ai/tools/regex-tester — Test regular expressions with live match highlighting and capture groups - Password Generator: https://crewhaus.ai/tools/password-generator — Generate strong, random passwords with configurable length and character sets - Color Picker: https://crewhaus.ai/tools/color-picker — Pick colors and convert between HEX, RGB, and HSL, generate color palettes - Markdown Preview: https://crewhaus.ai/tools/markdown-preview — Live markdown editor with side-by-side preview - Text Diff: https://crewhaus.ai/tools/text-diff — Compare two texts side by side with highlighted additions, deletions, and changes - CSS Gradient Generator: https://crewhaus.ai/tools/css-gradient-generator — Build linear and