NEXUS ERP

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NEXUS ERP is a source-available business suite that integrates CRM, project management, invoicing, and HR for service teams. It is free to self-host with no per-user pricing.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is NEXUS ERP?

NEXUS ERP is a comprehensive, source-available business management suite designed specifically for service-oriented SMEs. Licensed under the BSL, it integrates essential functions like CRM, project management, invoicing, time tracking, HR, and marketing automation into one modern application. Users benefit from features such as Gantt planning, ML-powered invoice predictions, real-time time tracking, and automated marketing workflows. The platform emphasizes no per-user pricing and no vendor lock-in, offering a self-hostable solution. It also includes unique capabilities like uptime monitoring, project debriefing, and CalDAV/CardDAV sync, making it a robust alternative to bloated ERPs by focusing on the specific needs of service businesses.

Best used for

Ideal for service-oriented businesses who need to manage client projects, automate marketing campaigns, and streamline invoicing processes. Especially valuable for digital agencies, IT service companies, and consultancies seeking an integrated, self-hostable solution without per-user pricing or vendor lock-in.

Common actions

manage projects

track time

automate marketing

handle invoicing

monitor uptime

business suiteCRMself-hostedinvoicingproject managementERPHRWorkflow automationopen-sourcemarketing automation

Capabilities

Key features

Source-available business suite
CRM with network visualization
Gantt project planning
ML-powered invoice predictions
Real-time time tracking
Marketing automation workflows
Uptime monitoring

Target Audience

product managerdeveloperaccountantmarketer

Integrations

gitlabmattermostslackkeycloakcaldavcarddav

Pricing & Plans

Open Source

FAQs

What is the licensing model for NEXUS ERP?

NEXUS ERP is licensed under the Business Source License (BSL), making it source-available. This means you can view, modify, and self-host the software for free, without per-user pricing or vendor lock-in, while respecting the BSL terms.

Does NEXUS ERP support regional holidays for HR calculations?

Yes, NEXUS ERP includes a new Holiday model with support for German regional holidays. It validates holidays by ZIP code, ensuring accurate working day calculations across all federal states for HR and project planning.

What kind of integrations does NEXUS ERP offer?

NEXUS ERP offers first-class integrations with tools like GitLab for webhook-driven tracking, Mattermost and Slack for notifications, and Local AI for code review suggestions and invoice predictions. It also supports CalDAV/CardDAV for calendar and contact sync.

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Workflow Automation Strategy & Planning HR & Recruiting Document Management Legal & Compliance Team Collaboration

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