No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Gleek
Type a short text description and get flowcharts, UML or ER diagrams back, with no need for the mouse.
Since 2021
Free plan · Design and images · Developers
- Vexlio
Flowchart editor where any shape can open a popup with notes, images or sub-diagrams, shared through a read-only link.
Since 2017
Free plan · Design and images
- SimpleDiagrams
Mac app for drawing quick sketch-style flowcharts, architecture sketches and process diagrams, bought once with no subscription.
One-off payment · Design and images
- Bhava
Turns a text prompt, sketch or screenshot into an editable diagram such as a flowchart or system architecture map.
Since 2025
Free plan · Design and images · Developers
- Line9
Draws your existing Mermaid diagram source with tidier layout and type, exporting to SVG or PNG.
Since 2026
Free plan · Design and images · Developers
- Beauty Diagram
Paste Mermaid, PlantUML or draw.io source and get a cleaner laid-out diagram to export as SVG or PNG.
Since 2026
Free plan · Design and images · Developers
- Mermaid Chart
Make diagrams from Mermaid code, a visual editor or AI prompts, and use them inside IDEs, GitHub, Jira and Confluence.
Since 2025
Free plan · Design and images · Developers
- Whimsical
A shared canvas where product teams sketch flowcharts, wireframes and mind maps, with AI to draft them from a prompt.
Design and images · Software companies
- MockFlow
Online wireframing and whiteboard tool where teams sketch app screens, flowcharts and mind maps together.
Design and images · Agencies