Everything your team needs,
in one communication hub
A real-time collaboration workspace with video calls, audio calls, messaging, MQTT messaging, project tracking, PDF tools and more — built by the embedded teacher team.
Tools for every workflow
From real-time communication to organization and document handling — most tools are one login away, and PDF Merge & Split is free without one.
Dashboard
Get a live overview of your account, recent activity and quick access to every tool.
Video, Audio & Chat
Crystal-clear video calls, voice calls and secure instant messaging — right in the browser.
MQTT Messaging
Lightweight pub/sub messaging with custom brokers, live payload inspection and history.
Projects
Organize tasks, tracks and milestones with statuses, priorities and team awareness.
Notes
Capture ideas and docs with color-coded categories, pinned notes and instant search.
Inventory
Track stock, assets and quantities with low-stock signals and a tidy catalog.
Customers
Maintain customer records, contacts and interactions in one place.
PDF Search
Full-text search across your document library with highlight-and-jump results.
Secure Profiles
Role-based access, avatars and account security scoped to each member.
Simple, transparent pricing
Start free and scale as your team grows. No hidden fees — upgrade or downgrade anytime.
Free
For trying out the hub solo
- Single user account
- Video, audio & chat
- MQTT messaging
- 50 notes
- Community support
Basic
Get started with one feature
- Everything in Free
- Video & audio calls unlocked
- 1 paid feature included
- Unlimited notes
- Priority email support
Pro
For growing teams
- Everything in Basic
- Video, MQTT & projects
- Project management
- Unlimited projects
- Priority support
All Features
Everything for one low price
- Everything in Pro
- PDF tools & full-text search
- Customer & inventory management
- All paid features included
- 24/7 support
Ready to get started?
Sign in to access your dashboard, or register a new account to bring your team online today.
Login or RegisterFrequently asked questions
Quick answers about video calls, the free PDF tools, MQTT and the paid modules.
Is Communication Hub free to use?
Yes. There is a free plan that includes video and audio calls, instant messaging, MQTT messaging, notes, reminders and more. The PDF merge & split tool is completely free for everyone and does 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.
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.