Flompt

Flompt is a free and open-source visual prompt builder designed for creating, editing, and managing AI prompts using a block-based system. It enables users to decompose any prompt into modular blocks, adjust them visually, and recompile into Claude-optimized XML, with integrations for ChatGPT, Claude, Gemini (via browser extension), Claude Code (via native MCP server), and Make.com workflows. Flompt includes built-in prompt auditing, scoring, version history, context memory, and a library of 100+ templates for diverse use cases, making it especially valuable to AI developers, prompt engineers, and power users looking to streamline complex prompt workflows.