About CiraSync

Who We Are

CiraSync automatically syncs Microsoft 365 work contacts and shared calendars to employee smartphones.
So what does that actually mean and how does it help you?

Picture this: A C‑suite leader transitions out and someone new steps in. Access is cleaned up immediately, the new executive has every critical contact on day one, their calendars sync automatically — and it all happens quietly in the background.

CiraSync exists for one simple reason: work is easier when you can reach the right people, at the right time, without thinking about it.

Every day, employees rely on their phones to call a teammate, find a colleague, or check a shared schedule. But too often, contact lists are outdated, numbers are missing, or calendars don’t match what’s actually happening at work.

That’s where CiraSync comes in.

What We Do

Behind the scenes, CiraSync keeps your organization’s Microsoft 365 contacts and shared calendars automatically up to date on employee smartphones.

No manual updates.
No “who should I call?” moments.

When a new teammate joins, a number changes, or a shared calendar updates, CiraSync makes sure that information is already on your phone—so you can just get on with your day.

Why It Matters to You

When work contacts and calendars are always accurate:

You can call or message the right person instantly
Caller ID actually works when your phone rings
Shared schedules stay reliable
Teams move faster—especially in the field or on the go
It’s one less thing to manage, and one more thing that simply works

Who Uses CiraSync

Today, more than 3,000 organizations—from global enterprises and government agencies to utilities, first responders, and distributed field teams—trust CiraSync to keep their employees connected.

Different industries. Different roles. Same goal:
Make sure every employee has the right information, on every device, whenever they need it.

Our Products

CiraSync Cloud

The problem it solves
Employees rely on shared contacts and calendars every day — but Microsoft 365 doesn’t automatically push GAL contacts, shared mailboxes, or shared calendars to mobile devices. That leads to missed calls, outdated information, and constant IT requests.

The solution
CiraSync Cloud automatically delivers the contacts and calendars your organization depends on directly to employee iOS and Android devices — without user action or mobile device management.

What it does

  • Syncs Global Address List (GAL) contacts
  • Syncs shared mailbox contacts
  • Syncs public folder contacts
  • Syncs shared calendars
  • Syncs distribution lists

Why it matters

  • Employees always have the right contacts and schedules on their phones
  • IT controls everything centrally — no manual updates
  • Works quietly in the background once configured
CiraSync On-Prem

The problem it solves
Some organizations can’t use cloud-based sync solutions due to compliance, security, or data residency requirements — but they still need reliable contact and calendar synchronization.

The solution
CiraSync On‑Prem delivers the same automated contact and calendar sync as CiraSync Cloud — fully self‑hosted inside your network.

Who it’s designed for

  • Government agencies
  • Regulated industries
  • Air‑gapped or firewall‑restricted environments
  • Organizations requiring full data sovereignty

Why it matters

  • All data stays inside your infrastructure
  • No dependency on external cloud services
  • Consistent, reliable sync across Exchange, hybrid, and Microsoft environments
CiraSync Hub

The problem it solves
Contact data lives in too many systems — Microsoft 365, Google Workspace, CRMs, help desks, marketing platforms — and it rarely stays consistent. Teams don’t trust the data, and IT is stuck managing syncs manually.

The solution
CiraHub is a multi‑way sync platform that connects all your contact systems and keeps them aligned automatically.

What it connects

  • Microsoft 365
  • Google Workspace
  • CRMs
  • Help desks
  • Marketing platforms
  • Dozens of other business systems

Why it matters

  • Creates a single source of truth for contact data
  • Keeps every system updated automatically — one‑way or two‑way
  • Ensures every team works from clean, consistent information

Ready to Sync Smarter?

Join 3,000+ enterprises that trust CiraSync for seamless contact and calendar synchronization.

Chat With Our Team

CiraSync in the News

soc2comliant
GDPR