What is EternalEngine?
EternalEngineOS is the one-person business back office for solo founders and small service businesses. One app brings together CRM, invoicing, payments, booking and email, so a one-person business can run its whole back office without five separate subscriptions. Keep track of clients, send invoices and estimates, accept payments, manage bookings on your calendar, and stay in touch by email. Free is $0 with no credit card required, and Basic is $9.95 per month flat with a 30-day trial that needs no card. Launched 3 months ago and in beta.
Pricing
Price Starts At:
$9.95/month
Price Overview:
Free $0 (no card, not a trial). Basic $9.95/mo flat, with a 30-day no-card trial. Team $49/mo. Pro $99/mo. Business $199/mo.
Free Version:
Free Version available.
Free Trial Offered?:
Yes
Integrations
No integrations listed.
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Screenshots and Video
EternalEngine CRM dashboard
Company Facts
Company Name:
EternalEngine
Date Founded:
2026
Company Location:
United States
Company Website:
eternalengineos.io/basic/
Product Details
Deployment
SaaS
Product Details
Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English
EternalEngine Categories and Features
Business Management Software
Billing & Invoicing
CRM
Financial Management
Marketing Management
Scheduling