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Overflow

overflow.io

From €19.95/mo Free trial WebWindowsmacOS
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Spec score 8.7 #7 of 41 in Web Design Software

What it is

Overflow lets users create, present, share, and get feedback on interactive user flow diagrams. It syncs designs from Figma, Sketch, Adobe XD, and Adobe Photoshop. Diagrams can include customizable connectors, styles, device skins, hotspots, shapes, text, and multiple boards. Users can present playable flows, self-guided Stories, and rapid prototypes. Cloud publications can be shared by link, embedded, protected with a passphrase, exported as PDF or PNG, or printed. Collaboration includes personal and team folders, editor invitations, comments, mentions, and notifications, with integrations for Confluence, Jira, and Trello. Overflow is available on macOS, Windows, and the web. Its 14-day trial requires no credit card and gives desktop-app and Cloud-sharing access without limitations. After the trial, that access ends; data remains hosted for 60 days and is then deleted if no subscription is activated. Pro costs €19.95 per user/month, billed monthly, and includes 1GB cloud storage per user, Cloud sharing, folders, and comments.

Spec sheet

What it does
Overflow creates interactive user-flow diagrams, design presentations and guided walkthroughs for product and design teams.Read 15 Oct 2026 · overflow.io
Purpose
Overflow lets users create, present, share and get feedback on interactive user flow diagrams.Read 1 Oct 2026 · support.overflow.io
Integrations
Officially listed collaboration integrations include Confluence, Jira and Trello, while presentations can also be embedded in Slack and Dropbox.Read 15 Oct 2026 · overflow.io
Support
Enterprise includes priority support and tailored onboarding, while the pricing page directs users to chat support and the Help Center.Read 1 Oct 2026 · overflow.io
Headquarters
San Francisco, California, United StatesRead 23 Sep 2026 · overflow.io
After trial
After the trial, desktop-app and Cloud-sharing access ends; data remains hosted for 60 days and is then deleted if no subscription is activated.Read 1 Oct 2026 · overflow.io
Annotations
Text and shapes can be added to provide explanatory context.Read 15 Oct 2026 · overflow.io
Boards
Documents can be divided into multiple boards and subflows for navigation and presentation.Read 15 Oct 2026 · overflow.io
Canvas flows
Users can import designs and arrange screens into bird’s-eye user-flow diagrams.Read 15 Oct 2026 · overflow.io
Cloud publishing
Published flows generate share links that recipients can view without installing the app.Read 15 Oct 2026 · overflow.io
Collaboration
Teams can use personal and shared folders, invite document editors and access version history.Read 15 Oct 2026 · overflow.io
Collaboration integrations
Overflow lists Confluence, Jira and Trello collaboration integrations and supports embedding presentations in collaboration or content-management tools.Read 1 Oct 2026 · overflow.io
Company facts
LinkedIn lists PROTOIO INC as privately held, founded in 2011, headquartered in San Francisco and employing 11–50 people.Read 15 Oct 2026 · linkedin.com
Company identity
PROTOIO INC describes itself as the maker of Proto.io and Overflow.Read 15 Oct 2026 · linkedin.com
Connectors
Connectors can be drawn from layers to screens and customized with colors, labels and endpoints.Read 15 Oct 2026 · overflow.io
Data hosting
The pricing FAQ says cloud data is stored on AWS servers located in the United States.Read 15 Oct 2026 · overflow.io
Data location
Overflow says its servers are located in the United States and cloud data is stored in AWS Amazon Cloud.Read 1 Oct 2026 · overflow.io
Data security
The privacy policy says sensitive data is protected in transit with SSL, TLS or similar encryption and firewalls are used to help prevent external network access.Read 1 Oct 2026 · overflow.io
Design synchronization
The desktop app syncs designs from Figma, Sketch, Adobe XD and Adobe Photoshop.Read 15 Oct 2026 · overflow.io
Design syncing
It integrates with Figma, Sketch, Adobe XD and Adobe Photoshop for syncing designs.Read 1 Oct 2026 · overflow.io
Desktop availability
The editor is offered only for macOS and Windows desktops or laptops; cloud publications work in major desktop and mobile browsers.Read 15 Oct 2026 · support.overflow.io
Desktop limit
Each seat can be activated on multiple computers but used on only one computer at a time.Read 1 Oct 2026 · overflow.io
Device skins
Overflow automatically detects suitable device skins for common devices and applies them to artboards.Read 15 Oct 2026 · overflow.io
Diagram features
Features include customizable connectors, styles, device skins, hotspots, shapes, text and multiple boards.Read 1 Oct 2026 · overflow.io
Documentation
The Learn Center provides installation guidance, workflow articles, FAQs and a release archive.Read 15 Oct 2026 · support.overflow.io
Embedding
Presentations can be embedded in collaboration tools, websites and blogs.Read 15 Oct 2026 · overflow.io
Export
Entire flows or individual boards can be exported to PDF or PNG.Read 15 Oct 2026 · overflow.io
Feedback
Stakeholders can comment on shared publications, with email notifications and mentions available.Read 15 Oct 2026 · overflow.io
Hotspots
Imported screenshots can receive drawn hotspots that link to other screens.Read 15 Oct 2026 · overflow.io
Licence
The EULA grants a limited, nonexclusive object-code licence for internal business use, indicating proprietary software rather than open source.Read 15 Oct 2026 · overflow.io
Limit: comments location
A reviewer wanted developer comments visible in the desktop file instead of requiring browser viewing.Read 15 Oct 2026 · capterra.com
Limit: large files
Reviewers report slow performance or long loading when projects contain many images or large files.Read 15 Oct 2026 · capterra.com
Limit: real-time collaboration
One reviewer said a real-time collaboration feature would be useful.Read 15 Oct 2026 · capterra.com
Limit: syncing
A Capterra reviewer describes Figma synchronization as cumbersome and asks for stronger links back to source comps.Read 15 Oct 2026 · capterra.com
Limit: visual controls
Reviewers mention limited shape options and cumbersome styling when multiple color codes are needed.Read 15 Oct 2026 · capterra.com
Logical flows
Shapes can represent decision trees and conditional branches.Read 15 Oct 2026 · overflow.io
Praise: ease and presentation
G2 reviewers repeatedly praise the intuitive interface, visual appeal and usefulness for user-flow presentations.Read 15 Oct 2026 · g2.com
Praise: Figma workflow
Capterra and GetApp reviewers highlight efficient Figma syncing or plugins for bringing screens into maps.Read 15 Oct 2026 · capterra.com
Presentations
Overflow supports interactive playable user flows, self-guided Stories and rapid prototypes.Read 1 Oct 2026 · overflow.io
Privacy controls
The privacy policy says the service uses SSL/TLS or similar encryption for sensitive transmission and network firewalls.Read 15 Oct 2026 · overflow.io
Prototype links
Prototyping links from supported design tools can be imported as connectors.Read 15 Oct 2026 · overflow.io
Prototype view
A screen-by-screen prototype mode lets viewers navigate designs with mouse controls or keyboard arrows.Read 15 Oct 2026 · overflow.io
Rating on Capterra
4.6 out of 5 from 7 reviewsRead 15 Oct 2026 · capterra.com
Rating on G2
3.9 out of 5 from 17 reviewsRead 15 Oct 2026 · g2.com
Rating on GetApp
4.6 out of 5 from 7 reviewsRead 15 Oct 2026 · getapp.com
Resync behavior
Resyncing transfers visual design changes and automatically adapts connectors to updated artboards.Read 15 Oct 2026 · overflow.io
Security and compliance
The Enterprise page states ISO/IEC 27001-certified internal practices and GDPR compliance.Read 15 Oct 2026 · overflow.io
Security compliance
Overflow says its internal practices and policies are ISO/IEC 27001-certified and GDPR-compliant.Read 1 Oct 2026 · overflow.io
Security sharing
Publication links can be protected with a passphrase.Read 15 Oct 2026 · overflow.io
Sharing
Cloud publications can be shared by link, embedded, passphrase-protected, exported to PDF or PNG, or printed.Read 1 Oct 2026 · overflow.io
Story view
Overflow Stories provides self-guided, step-by-step presentations with scenes and text prompts.Read 15 Oct 2026 · overflow.io
Styles
A styles editor globally updates connector, text, shape and device-skin styling.Read 15 Oct 2026 · overflow.io
System requirements
The Mac download supports macOS 10.11 or later, requires at least 4GB RAM and supports Apple Silicon.Read 15 Oct 2026 · overflow.io
Trial conditions
The 14-day trial requires no credit card and provides desktop-app and Cloud-sharing access without limitations.Read 1 Oct 2026 · overflow.io

Plans and prices

Pro €19.95 a month per user/month 1GB cloud storage per user · Overflow Cloud sharing · private and team folders · embedded share links · PDF printing · watermark-free export · comments Read 15 Oct 2026 · overflow.io
Enterprise Priced on request contact sales Everything in Pro · advanced security permissions · SSO/SAML · unlimited users · pre-approved external reviewers · unlimited cloud storage · priority support Read 15 Oct 2026 · overflow.io

Every Overflow plan and price →

Strong points and limits

Strong points

  • Syncs with Figma, Sketch, Adobe XD, and Photoshop.
  • Supports playable flows and rapid prototypes.
  • Publications can be shared, embedded, or exported.
  • Includes comments, mentions, and notifications.
  • 14-day trial requires no credit card.

Limits

  • No free plan.
  • Trial access ends after 14 days.
  • Data is deleted after 60 days without a subscription.
  • Each seat can be used on one computer at a time.

Who it suits

Overflow suits product and design teams making interactive flows and prototypes, especially those syncing designs from supported design tools. Its folders, comments, and integrations support team review and sharing.

Verdict

Overflow combines interactive flow creation with presentation, publication, and team feedback options. The trial is unrestricted, but desktop and Cloud-sharing access end when it expires unless a subscription is activated.

Where Specifiction places it

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