Replace 15 tools with one workspace
Calendar, CRM, sales, billing, projects, communications, document vault. Every workflow lives in one place. Stop paying for SaaS overlap and stop copy-pasting between tabs.
One workspace for the work a dozen subscriptions do now.
Calendar, CRM, invoicing, projects, e-signature, inbound mail triage. They share one login and one database, so a booking becomes an invoice without anybody exporting a CSV. Run it on our servers or your own.
The Free plan has no monthly charge. A one-time sign-up fee of $19.00 opens your workspace.
22 modules, one loginSwitch off what you do not use
- Dashboard
- Calendar
- Booking
- Contacts
- Deals
- ZI Project
- Inbox
- Mail Guard
- Document Vault
- Wallet Up
- ZenithQR
- ZI² Sign
and 10 more
- integrated modules
- 22
- login for everything
- 1
- encryption for stored secrets and backups
- AES-256 + ML-KEM
- ready out of the box
- GDPR
integrated modules
login for everything
encryption for stored secrets and backups
ready out of the box
How it works
Three steps from blank workspace to running business.
No migration committee, no implementation consultants. Sign up, switch on the modules you need, and start operating.
zisquare.app/onboarding
Workspace name
Acme Operations
Slug
acme-ops
Role
Owner
Workspace ready
Encrypted by default
Why ZI² Square
Built to replace your stack, not add to it.
Most teams stitch together a calendar, a CRM, an email tool, an invoicing app, a project board, and a document store, then pay five vendors and fight five APIs. ZI² Square ships them as one.
Self-host it or let us run it
Run on our managed cloud or on your own servers. A separate database for each workspace on request, TLS on every connection, AES-256-GCM for stored credentials, post-quantum ML-KEM key wrapping for backups, a full audit trail and retention policies.
Pay only for the addons you use
15 optional modules on top of the always-on core. Activate Mail Guard when you need it, switch off Production if you don't. No forced bundles.
All modules
Everything your team needs, under one login.
22 integrated modules across 8 categories. Every workflow shares the same contacts, calendars, and audit log. Activate the addons you need, switch off the ones you don't.
Productivity & Collaboration
How your team works, schedules, and ships together.
Dashboard
Your daily command center at a glance
See pipeline value, follow-ups, bookings, invoices, and team activity on one screen. No tab switching.
Calendar
Schedule, manage, and sync all your events
Native calendar with Google/Outlook sync, attendees, reminders, and CRM-aware events linked to deals & contacts.
Booking
Public scheduling pages for clients
Branded booking pages with availability rules, custom forms, Zoom links, payment-gated slots, and reschedule/cancel tokens.
ZI Project
Kanban project management for teams
Boards, columns, tasks, labels, comments, time tracking, all linked to your contacts, deals, and customers.
Team Notes
Share announcements and notes with your team
Pinned team scratchpad for runbooks, decisions, and quick FAQs, always one click away from any screen.
CRM & Sales
Every contact, company, and deal in one place.
Contacts
Your CRM relationship hub
Every contact with engagement scoring, follow-ups and a full activity timeline, shared by every module.
Companies
Organize your business accounts
Company records with industry, size, multi-contact rollups, deal history, and revenue intelligence.
Deals
Visual pipeline for your sales process
Drag-and-drop pipeline with custom stages, probabilities, weighted forecast, win/loss tracking, and per-deal automations.
Communications
Email, SMS, and inbound triage, built in.
Inbox
Unified email with CRM intelligence
Connect Gmail/Outlook or any IMAP. Emails auto-link to contacts and deals, with AI summarization and one-click follow-ups.
New
Bulk SMS
Mass messaging campaigns via SMS
Template-based campaigns with rate limiting, opt-out handling, and per-provider routing across your SMS gateways.
New
Business Sender
Send from your own business address
Mail goes out under your business name and address, with a reply address your team actually reads, once the domain is verified.
New
Mail Guard
Inbound mail triage with ZI² Certified scoring
Real-time scoring of every inbound message. Flag spoofs, prioritize humans, auto-route to folders. Works with server-hosted, Gmail, Outlook, or any IMAP.
New
Mailroom
Mail triage and replies that stay on your own server
Every inbound message is sorted, prioritised and given a draft reply, while the raw mail never leaves your server. Rules, an approval queue, response-time tracking and per-venture analytics.
Finance
Payments, invoicing, and revenue tracking.
Wallet Up
Payments, invoicing, and financial reports
Invoice generation, branded PDFs, payment links, multi-currency, tax handling, refunds, and merchant-account integrations.
Operations
Inventory, shipping, production, and leave management.
Shipping
Track shipments and manage inventory
Shipment lifecycle from creation to carrier handoff, tracking events and delivery confirmation, with delay alerts.
Production
Manage manufacturing workflows
Production orders tied to stock items and deals, with multi-step routing, buffer days, and estimated delivery rollups.
Time Off
Leave requests and team availability
Policies, balances, multi-step approvals, calendar overlay, and accrual tracking, so you can plan capacity from real numbers.
Marketing & Sharing
QR codes, short URLs, and brand-ready public surfaces.
Marketing
Coupons, automatic discounts and affiliate programs
Create discount codes and automatic offers, pay affiliates a commission on the customers they refer, and see the revenue each code and partner brings in.
ZenithQR
Enterprise QR code generation and analytics
Dynamic QR codes with scan analytics, expiry, IP restrictions, branded templates, short URLs, and payment-validation QR auth.
Security & Compliance
Document vault, retention policies, and audit-ready storage.
New
Document Vault
Secure document storage, classification, search & sharing
Encrypted file storage with auto-classification, retention policies, audit log, legal-hold, OCR, semantic search, and share permissions you set per folder.
New
ZI² Sign
Electronic signatures with a seal anyone can check
Send any PDF for signature, drawn, typed or uploaded, in order or all at once, with reminders and expiry. Every completed document carries a certificate of completion and a ZI² Certified seal.
New
ZI² Vetting
Files and links that open only for the person you sent them to
Send a Vault file or a link from your certified mail. It opens only for the recipient, on their device, with a seal anyone can check and the credentials you choose to show.
Platform
Workspace settings, integrations, and tenant administration.
Settings
Personalize your workspace
Profile, branding, billing, addons, integrations, security (MFA, WebAuthn), API keys, and team management, all in one place.
Security & compliance
Enterprise-grade by default, not as an upsell.
Encryption, audit trails, retention, and workspace isolation ship in every plan, including free. Pay for higher seats, more storage, and dedicated databases; never pay for basic safety.
ZI² Hybrid encryption
TLS protects every connection. Stored credentials and two-factor secrets are encrypted with AES-256-GCM, and every database backup key is wrapped with ML-KEM-1024 (Kyber), the NIST post-quantum standard.
Two-factor sign-in and passkeys
Every user can add time-based one-time codes (TOTP) and passkeys, so sign-in works with Touch ID, Face ID, Windows Hello or a hardware security key.
A separate database on request
Each workspace can run on its own dedicated database, on our servers or on yours.
Immutable audit log
Every change is recorded with who made it, from which address and when. Export the log whenever you need it.
Retention & legal hold
Document Vault enforces retention policies per folder, plus legal-hold flags that block delete operations.
GDPR-ready
DSR export per user, right-to-erasure with cascade, EU-resident hosting option, processor agreement on request.
Pricing
Simple plans. Pay for what you use.
The Free plan has no monthly charge after a one-time sign-up fee. Add seats and modules only when you need them. The prices below are the prices you pay at checkout, shown in your currency.
Free
$0.00per month
One-time sign-up fee: $19.00
For founders and small teams getting started.
- Seats included: 1
- Extra seats $5.00 each, one-time
- 100 MB of document storage
- Up to 250 contacts
- Up to 100 calendar events a month
Professional
On requestset up with our team
Room to grow for teams that run their business here.
- Unlimited seats
- 10 GB of document storage
- Unlimited contacts
- Unlimited calendar events
- Custom fields
- API access
- Audit log
Enterprise
On requestset up with our team
For organizations that need their own setup and support.
- Unlimited seats
- Unlimited document storage
- Unlimited contacts
- Unlimited calendar events
- Custom fields
- API access
- Audit log
- Priority support
Optional modules
Switch on the modules you need. Modules your plan includes cost nothing extra.
- Booking
- Included
- ZI Project
- Included
- Deals
- Included
- Bulk SMS
- Included
- Business Sender
- Included
- Mail Guard
- $9.00 one-time
- Mailroom
- Included
- Wallet Up
- Included
- Shipping
- Included
- Production
- Included
- Time Off
- Included
- ZenithQR
- Included
- Document Vault
- $10.01 one-time
- ZI² Sign
- Included
- ZI² Vetting
- Included
FAQ
Questions buyers actually ask.
Real answers to the things decision-makers want to know before they hit "Get started".
How is this different from buying separate tools?
You stop paying for overlap and stop copy-pasting. Every module shares contacts, calendars, deals, and the audit log, so an inbound email auto-links to its deal, an invoice can be QR-paid in one tap, and a booking auto-creates a calendar event with the right attendees.
Can I self-host?
Yes. You can run the whole suite on your own infrastructure, connect it to your own database and keep every byte under your control. There is also a desktop app with its own local database for single-user, offline use.
What about migration from existing tools?
Built-in import for contacts, deals, calendar events, email lists, and document folders from CSV. CRM imports support per-source mapping; we also handle merge-on-email-conflict and de-duplication on first run.
How is data encrypted?
Every connection uses TLS. Passwords are stored only as Argon2id hashes. Connected-account tokens, provider keys and two-factor secrets are encrypted with AES-256-GCM before they are stored. Database backups are encrypted with AES-256-GCM, and each backup key is wrapped with ML-KEM-1024 (Kyber), the NIST post-quantum standard (FIPS 203).
Is there an API?
Yes. A REST API with scoped API keys, per-route permissions and a full audit log. The pricing section shows which plans include API access.
What does pricing look like?
The Free plan has no monthly charge. Opening a workspace takes a one-time sign-up fee of $19.00. Each plan lists its seats, storage and included modules, and extra seats and optional modules show their current price in your currency. The pricing section always matches what you pay at checkout.
Stop juggling tabs. Run your business in one workspace.
No monthly charge on the Free plan, after a one-time sign-up fee of $19.00. Add seats and modules only when you need them.