Axure RP - UX Prototypes, Specifications, and Diagrams in One Tool
All-in-one software design tool for creating prototypes, specifications, and diagrams
legivel: Markdown to PDF, typeset
Markdown in, a properly typeset PDF out: real line breaking, tables that survive a page break, vector diagrams
Lucidchart | Diagramming Powered By Intelligence
Create next-generation diagrams with AI, data, and automation in Lucidchart. Understand and optimize every sys
Phosphor Icons
A flexible icon family for interfaces, diagrams, presentations — whatever, really.
Sarala — A Markdown editor that gets out of your way
Sarala is a free, open-source WYSIWYG Markdown editor that renders as you type — no preview pane, no split vie
Synonyms.com
Free online thesaurus with synonym and antonym definitions for many languages, including visual diagrams, audi
System Design Atlas
Concept modules and worked system design problems, with architecture diagrams and trade-offs.
Viaduct — C4 Modeling Tool with an MCP Server for AI Coding Agents
Viaduct is a C4 modeling tool for software teams, with a hosted MCP server that feeds your architecture to AI
Whimsical — The whiteboard for product builders
Design and document implementation with diagrams. Shape UI with wireframes. Collaborate with your team and AI.
Online Mockup, Wireframe & UI Prototyping Tool
Moqups is a streamlined and intuitive web app that helps you create and collaborate on wireframes, mockups, di
VisuaLeaf - MongoDB GUI with Visual Query Builder, Aggregation Pipelines & Schema Visualization
Visual MongoDB GUI with query builder, aggregation pipelines, and schema diagrams. Build faster, understand yo
mcdview blog
Guides on turning SQL schemas into live interactive ER diagrams.
Comprehensive Event Diagramming Platform - Social Tables
Manage event space easier than ever Cvent Event Diagramming (formerly Social Tables) is a collaborative event