The Startup OS

Stop duct-taping
your stack.

cusoso Sign gives young companies everything to run the business from day one — CRM, offers, orders and invoices, contracts, digital signatures, projects and cash planning — in one platform, hosted in Germany.

See how it works
Hosted in Germany GDPR-compliant, EU providers Every action in an audit trail
sign.cusoso.com
cusoso Sign Hex Test
Dashboard
CRM
Orders
Contracts
Dashboard
F
Leads
24
+12%
Revenue
€48k
+8%
Invoices
7
3 pending
Pipeline
Discovery
8
Proposal
5
Closing
3

The first year is brutal.

Most startups don't fail because of the product. They fail because of everything around it.

Your CRM is a spreadsheet

Leads fall through the cracks. Follow-ups get forgotten. Your pipeline lives in a file called "clients_final_v3.xlsx".

Invoices go out late

You're too busy building to bill. Cash flow suffers. Every delayed invoice is money you've already earned but haven't received.

Contracts live in email threads

Board approvals happen in WhatsApp. Customer contracts go back and forth for weeks. Nothing is signed, tracked, or filed properly.

Seven tools, zero overview

Notion, Pipedrive, Stripe, DocuSign… and you're paying for all of them separately. Your data is fragmented. Your team is confused.

One platform

Everything a founding team needs.

Eight integrated modules. No duct tape. No spreadsheets. No chaos.

01

CRM & Lead Pipeline

Capture prospects, move them through stages, and never miss a follow-up.

02

Offers & offer websites

Build offers from templates, export them as PDF and share a password-protected offer page — with tracked views and digital acceptance.

03

Orders & e-invoicing

Create orders, issue invoices as PDF, XRechnung or ZUGFeRD, cancel them cleanly and track what has been paid.

04

Contracts & deadlines

One filing for all contracts, with notice periods, automatic reminders and the signed copies attached.

05

Digital signatures

Sign with colleagues and external partners by personal link — protected by an e-mail code, with a signature protocol listing every signer.

06

Projects & time tracking

Plan tasks with dependencies, agree deliverables, collect customer acceptance and transfer approved hours into the order.

07

Cash planning

See your liquidity over 12 to 36 months — gross, with VAT account, budgets, scenarios and a warning before the money runs out.

08

Corporate & teams

Board resolutions, cap table and shareholder lists, org chart, roles and business units — each company kept apart.

CRM & Pipeline

Never lose a deal in the chaos of early growth.

From first prospect to signed customer — cusoso Sign tracks every stage of your pipeline, logs every interaction, and reminds you when to follow up. Kanban or table view, your choice.

  • Kanban and table views with drag-and-drop stage updates
  • Automatic nurturing for deals closing beyond 6 months
  • Built-in event reminders and marketing funnel tracking
sign.cusoso.com/crm
Discovery · 8
Acme Corp
€12,000 · Follow-up today
Beta GmbH
€8,500 · Call next week
Proposal · 5
Startup XY
€24,000 · Sent 3 days ago
Closing · 3
Venture AG
€38,000 · Closes Friday
sign.cusoso.com/orderbook
Recent Invoices
RE-00042
Acme Corp · 15.03.2026
€4,760.00
Paid
RE-00041
Beta GmbH · 10.03.2026
€12,400.00
Pending
RE-00040
Venture AG · 01.03.2026
€31,200.00
Paid
Orders & e-invoicing

Get paid. Every time. On time.

Create orders, track line items, and generate professional PDF invoices in seconds. Know exactly what's been billed, what's outstanding, and what's overdue.

  • One-click professional PDF invoices with your branding
  • E-invoices (XRechnung, ZUGFeRD), consolidated and cancellation invoices
  • Cash planning with VAT account, budgets and a liquidity warning
Digital signatures

Board decisions don't belong in a chat thread.

Handle customer contracts, offers, board resolutions and internal approvals directly inside cusoso Sign. External partners sign by personal link, without an account — every signer is documented in a signature protocol.

  • Parallel or sequential signing rounds, with the option to decline and give a reason
  • External signers confirm their identity with an e-mail code on every access
  • Signature protocol with all signers; resolutions are sealed after completion
sign.cusoso.com/agreements
Signatures
Service Agreement — Acme
2 signatures required
Signed
Board Resolution Q1/2026
Awaiting 1 signature
Pending
NDA — Investor Meeting
Draft
Draft
sign.cusoso.com/admin/users
Team Members
A
Anna Schmidt
anna@startup.io
Admin
M
Max Müller
max@startup.io
Manager
L
Lisa Weber
lisa@startup.io
User
Access & Teams

Built for teams from day one, not retrofitted.

Invite your co-founders and first hires, assign roles and keep data organized by business unit — every company in the group stays separate. SSO support for Microsoft and Auth0 means your team gets in fast, without security compromises.

  • Five role levels — managers see and manage their business unit, admins all of them
  • SSO with Microsoft (Azure AD) and Auth0
  • Full audit log for every action across the platform
8
integrated modules
CRM, offers, orders, contracts, signatures, projects, cash, corporate
1
unified platform
Everything connected, nothing siloed
∞
hours saved
No more tool-switching tax
0
spreadsheets needed
Structure from day one
Get started today

Your foundation is
one click away.

Stop cobbling together your stack. Start on solid ground — with the structure that lets you move fast without breaking things.

No implementation hustle. No enterprise bloat. Just structure.