Sync Any Source to Every Phone, Automatically

Your organization’s contacts live everywhere: CRMs, HR systems, shared mailboxes, spreadsheets, partner directories, and more. But your teams rely on their phones to reach the people who matter. CiraSync turns scattered, siloed contact data into always‑up‑to‑date contacts on every employee smartphone.

No apps, no user training, no manual updates. This is contact synchronization made simple.

Talk to a Human

One Unified Goal: Get Every Contact to Every Phone

Whether you need one‑way updates, two-way or full multi‑way synchronization, CiraSync ensures your teams always have accurate, complete contact information at their fingertips.

If it stores contacts, CiraSync can sync it.

You can sync:

CRMs (Salesforce, HubSpot, Zoho, and more)
HR systems and employee directories
Shared mailboxes
Microsoft 365 Global Address Lists
Partner and vendor contact lists
Multi‑tenant or cross‑department directories
Even CSVs and custom data sources

Our Products

CiraSync Cloud

Effortless enterprise-grade one-way syncing of Contacts & Calendars across unlimited users, hosted on the Azure cloud

CiraSync On-Premise

All the benefits of CiraSync Cloud, hosted directly on-premises for high security environments

CiraSync Hub

Two-way syncing of Contacts & Calendars, not only across Microsoft environments but across Google, Hubspot, and many other CRM platforms

Choose the Sync Solution That Fits Your Organization

CiraSync Cloud

CiraSync Cloud is the easiest way to push contacts from any source into Microsoft 365 and onto employee devices.

Perfect for organizations that need:

One‑way sync from any directory or list → Outlook → smartphones
Daily or hourly updates with zero user involvement
Caller ID that instantly identifies customers, partners, and employees
A simple, admin‑friendly solution that “just works”

CiraSync Cloud ensures every employee phone stays aligned with your organization’s most important contact data.

CiraSync On-Premise

CiraSync On‑Premise is the easiest way to push contacts from approved internal sources into Microsoft 365 and onto employee phones—without any data ever leaving your environment.

Perfect for organizations that need:

One‑way sync from directories, shared mailboxes, or internal systems → Outlook → smartphones
All processing and data storage to remain fully on‑premise
Automated daily or hourly updates with zero user involvement
Caller ID that instantly identifies employees, partners, and internal contacts
A simple, admin‑controlled solution designed for high‑security environments

CiraSync On‑Premise ensures every employee device stays aligned with your organization’s most critical contact data—while maintaining complete control, compliance, and data sovereignty.

CiraSync Hub

For organizations with a more complex environment, CiraHub syncs data back and forth between all your connected systems.

CiraHub is ideal when you need to:

Sync CRM ↔ Microsoft 365
Sync HR systems ↔ Outlook
Sync multiple Microsoft 365 tenants
Sync shared mailboxes, public folders, and GALs
Merge, clean, and unify contacts from multiple sources
Maintain a single source of truth across your entire ecosystem

With CiraHub, every system stays in sync, and every device stays accurate.

Why It Matters

Your teams move fast. They’re in the field, on the road, or face‑to‑face with customers. They can’t afford missing numbers, outdated contacts, or caller ID that doesn’t recognize who’s calling.

CiraSync Delivers: