Open Source Business & SaaS Tools

1. Cloud Infrastructure & Virtualization Platforms

• Ubicloud – Open source IaaS platform with compute, block storage, networking, and managed DB services.

• Proxmox VE – Open source virtualization platform combining KVM & LXC with clustering & native backup.

• OpenStack – Large scale open source IaaS with compute, networking, storage.

• XCP-ng – Open source hypervisor based on Citrix XenServer.

• oVirt – Open source virtualization manager for KVM.

• Virtuozzo Hybrid – Container-based virtualization platform.

• Nutanix Community Edition – Enterprise-grade hybrid cloud platform with virtualization and hyperconverged storage.

• KVM – Linux native virtualization technology.

2. Infrastructure as Code (IaC)

• Terraform & OpenTofu – Leading IaC for provisioning and managing infrastructure.

• Pulumi – Code-centric IaC using real programming languages.

• Ansible – Agentless automation and provisioning.

• Crossplane – Kubernetes-native cloud resource provisioning.

• Terragrunt – Terraform wrapper for DRY configs.

3. CI/CD & DevOps Automation

• Jenkins – Popular automation server.

• GitLab CI/CD – Integrated pipeline in GitLab.

• Argo CD – Kubernetes GitOps delivery.

• Flux – Kubernetes GitOps toolkit.

• Tekton – Cloud native CI/CD pipelines.

• Drone – Container native CI/CD.

4. DevSecOps & Security

• Checkov – IaC static analysis for security.

• TFLint – Terraform linter.

• Terrascan – Compliance and security scanner.

• Trivy – Vulnerability scanner for containers, IaC, and code.

• Open Policy Agent (OPA) – Policy enforcement engine.

• Kubescape – Kubernetes security scanner.

5. Monitoring & Observability

• Prometheus – Monitoring and alerting toolkit.

• Grafana – Dashboard and visualization.

• VictoriaMetrics – Scalable time series DB.

• Elasticsearch/OpenSearch – Search and log analytics.

6. ERP & Business Management

• Odoo

• ERPNext

• Dolibarr

• Apache OFBiz

• ADempiere

• Tryton

• Corteza Low-Code

• Onfinity

7. CRM & Sales

• SuiteCRM

• EspoCRM

• OroCRM

• Vtiger CRM

• YetiForce

8. Marketing & Email Automation

• Mautic

• Mailtrain

• phpList

• ListMonk

9. E-Commerce & POS

• OpenCart

• PrestaShop

• Saleor

• Bagisto

• Magento Open Source

• Zen Cart

• Odoo eCommerce

10. Accounting & Finance

• GnuCash

• TurboCASH

• xTuple

• Invoice Ninja

• Firefly III

11. HR & Payroll

• Sentrifugo

• OrangeHRM

• Odoo HR

12. Project Management & Collaboration

• OpenProject

• Taiga

• Focalboard

• WeKan

• Kanboard

• AppFlowy

• Penpot

13. Helpdesk & Support

• Zammad

• Faveo Helpdesk

• FreeScout

14. Knowledge Management & Docs

• Wiki.js

• BookStack

15. Team Communication

• Mattermost

• Rocket.Chat

• Zulip

• Jitsi

16. CMS & Website Builders

• WordPress

• Ghost

• Strapi

• Webstudio

17. Automation & Integration

• n8n

• Appsmith

18. Security & Password Management

• Bitwarden

19. AI, Low-Code & Emerging Tools

• Budibase

• Activepieces

• Eidolon AI

• MindsDB

• Mistral Devstral

• Grist

• Plane

• Documenso

• Dub.co