Free Technical diagrams - 13 Free AI tools

Whiteboard by Athena AI

Visualize your ideas and share with your team

Brainstorming

Open

92,592

156

4.5

v1.1.4 released 3mo ago

Free + from $5.99/mo

Share

86,714 athenaboard.ai

hamed elghoul

🙏 43 karma

Mar 19, 2025

Whiteboard by Athena AI is a user-friendly, AI-powered tool that makes digital collaboration seamless. supports real-time brainstorming, and integrates easily with other apps—ideal for teams, educators, and remote learners alike.

5013 Reply Share Delete Report

Diagramming

Instantly design UML & workflows with AI

Diagrams

Open

17,787

85

4.6

Released 2y ago

Free + from $3/mo

Share

Hassan

🙏 26 karma

Feb 17, 2024

Awesome tool!

1010 Reply Share Delete Report

caldera de condensación

AI-powered diagrams of condensation boiler systems

Technical drawings

Open

Released 11mo ago

100% Free

Share

DiagramMatic

Convierte descripciones en diagramas Mermaid con precisin lingstica.

Flowcharts

Open

3,006

34

2.6

Released 1y ago

100% Free

Share

SnapDiagram

AI transforms hand-drawn sketches into digital diagrams.

Diagram digitization

Open

3,056

26

1.0

Released 1y ago

Free + from $3/mo

Share

921 snapdiagram.xyz

Tomas

🛠️ 1 tool

Aug 25, 2024

Hey Tom, Thanks for sharing your feedback, and I'm sorry to hear that the conversion didn't meet your expectations. We want to make sure that you're getting the best experience possible. The team tested this before launch and the tool generated the diagram quite nicely. Check out this video showcasing a successful flowchart conversion https://www.youtube.com/watch?v=tvp18p-7Z_A. We would greatly appreciate if you want to share with us the image you uploaded that gave you the result mentioned. Just shoot us an email at [email protected]. If the issue persists or you'd like further assistance, feel free to reach out, and we'd be happy to look into it! Best regards, The SnapDiagram Team

Reply Share Delete Report

Mermaid Chart

Visualize complex data with simple charts

Diagrams

Open

5,602

18

Released 2y ago

Free + from $6.67/mo

Share

Code to Flowchart

Turn code into interactive flowcharts with AI

Coding

Open

5,446

12

1.0

Released 1y ago

Free + from $4.49/mo

Share

Fluig AI

Visual expression artifact. Turn docs and ideas into instant diagrams with AI.

Diagrams

Open

48,420

73

3.7

v1.1.0 released 3mo ago

Free + from $19/mo

Share

43,413 www.fluig.cc

Valentina Jara

🛠️ 1 tool 🙏 101 karma

May 27, 2025

Game changer. Stays on topic, generates solid layouts, fast, and switching formats is smoother than I expected, so what else do you really want/need? Big plus that it lets you test things properly before hitting you with a paywall (most tools do exactly that). Giving this one a 5 for sure!

4412 Reply Share Delete Report