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About

Arialine is an AI diagram generator and Mermaid diagram editor built for engineering and product teams working in Slack. Create flowcharts, architecture diagrams, sequence diagrams, UML, ERD, C4, swimlanes and other technical diagrams from plain language, Slack discussions, or Mermaid code. Paste valid Mermaid with /arialine and it renders without AI or usage limits. Diagrams stay editable in their Slack thread: reply to make changes, with every accepted edit saved as a version linked to the source message. Arialine includes history, undo, rewind, branching, decision context, PNG/SVG/PDF/.mmd exports, interactive HTML diagrams, Markdown-to-Slack-Canvas rendering, Mermaid 12 + ZenUML support, and an MCP server for Slack AI. It works on every Slack plan, including Free.

About

Notula is a free WYSIWYG Markdown editor for the docs as code already in your git repository. It opens the repo as a tree of documents and edits them with no syntax on screen - no hashes, no asterisks, no table pipes, not even on the line the cursor is on - then adds the review layer a code editor has no answer for: comment on a passage, reply, mention someone, suggest an edit, resolve. A mention arrives as a notification and waits in an inbox. Threads are committed beside the document as plain files. Nothing is written into the Markdown, and a one-word edit stays a one-word diff. Tables are edited as tables and Mermaid blocks are drawn as diagrams. It drives the git already on the machine, and never rewrites history, stages the whole worktree or switches a branch. Free, no account, no server. macOS and Windows, no Linux build yet. The source is closed and the builds are not code-signed yet, so the first launch takes one extra step.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software engineers, engineering teams, architects, DevOps/SRE teams, product teams, technical leads, and Slack-based organizations

Audience

Technical writers, product managers, support leads and engineering teams whose documentation lives in a git repository - including the people on the team who do not use git.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

No information available.
Free Version Supported
Free Trial Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Arialine
Founded: 2026
Ukraine
arialine.app

Company Information

Notula
Founded: 2026
notula.org

Alternatives

Alternatives

diagram.now

diagram.now

Votazz

Categories

Diagram Supported

Categories

Markdown Editors Supported

Integrations

Model Context Protocol (MCP) Supported
Slack Supported

Integrations

Model Context Protocol (MCP) Not Supported
Slack Not Supported
Claim Arialine and update features and information
Claim Arialine and update features and information
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Claim Notula and update features and information