Communication Hub
Calls, IoT messaging & document tools — in the browser

One workspace for your team and its devices

Video calls, messaging, MQTT, projects and document tools in a single browser app. Nothing to install.

Sign in to your workspaceSee what is included

Workspace

Included in the workspace

Modules turn on and off server-side, so only the tools you use appear here.

DashboardA live overview of your account, recent activity and every tool in one place.
Video, Audio & ChatCrystal-clear video calls, voice calls and secure instant messaging, right in the browser.
MQTT MessagingLightweight pub/sub messaging with custom brokers, live payload inspection and history.
ProjectsOrganize tasks, tracks and milestones with statuses, priorities and team awareness.
NotesCapture ideas and docs with color-coded categories, pinned notes and instant search.
InventoryTrack stock, assets and quantities with low-stock signals and a tidy catalog.
CustomersMaintain customer records, contacts and interactions in one place.
PDF SearchFull-text search across your document library with highlight-and-jump results.
Secure ProfilesRole-based access, avatars and account security scoped to each member.

Pricing

Straightforward pricing

Start on the free plan and add modules when your team needs them. Upgrade, downgrade or cancel at any time.

Free

Try the workspace solo

$0forever
  • Single user account
  • Video, audio & chat
  • MQTT messaging
  • 50 notes
  • Community support
Get started

Basic

Calls, reminders and more

$5per user / month
  • Everything in Free
  • Video & audio calls unlocked
  • Reminders included
  • Unlimited notes
  • Priority email support
Get started

AI Power

AI exam papers & PDF search

$10per user / month
  • Exam Question Generator
  • PDF library & full-text search
  • Questions from PDF, Word & slides
  • Question paper + answer key PDFs
  • Reminders included
Get started

All features

Best value

Everything, one price

$15per user / month
  • Every AI & PDF tool
  • Video, MQTT & projects
  • Customer & inventory management
  • All paid features included
  • Priority support
Get started

Create an account and bring your team online

Registration takes a minute. The document tools stay free either way.

Sign in or register

Support

Frequently asked questions

Is Communication Hub free to use?

Yes. There is a free plan that includes video and audio calls, instant messaging, MQTT messaging, notes and more. The PDF merge & split tool and the PDF/CSV converters are completely free for everyone and do not require an account or login.

Do I need to install anything to make video calls?

No. Video calls, audio calls and instant messaging run entirely in the browser with WebRTC. There is nothing to install, and calls work on desktop and mobile browsers alike.

Is the free PDF merge and split tool private?

Yes. Your PDFs are uploaded to the server, processed in per-request memory, and streamed straight back to you. Files are auto-deleted the moment the request finishes, whether you download the result or not. Nothing is ever written to disk or stored.

Can I convert PDFs, CSV files and scans for free without an account?

Yes. PDF merge & split, PDF to Word/Excel/PowerPoint, PDF to Markdown, CSV to Markdown and OCR to Text (photos, scans and image-only PDFs) are completely free and need no login. Uploads are processed in memory on the server and the converted file is streamed straight back to you. Nothing is ever stored.

What can I use the MQTT messaging feature for?

MQTT is a lightweight publish/subscribe protocol used by embedded devices and IoT hardware. The built-in MQTT web client lets you connect to a broker with your own credentials, subscribe to topics, publish messages and inspect live payloads right from your browser.

Can I track projects, inventory and customers too?

Yes. Communication Hub includes a project management module with kanban boards and timelines, an inventory module with stock levels and low-stock email alerts, and a customer module that tracks sales, payments and outstanding balances.