Open Source Business & SaaS Tools

Cloud Infrastructure & Virtualization Platforms

Ubicloud – IaaS platform with compute, block storage, networking, and managed DB services. Proxmox VE – Virtualization with KVM & LXC, clustering, backup. OpenStack – Scalable IaaS for compute, network, storage. XCP-ng – Open source hypervisor, XenServer compatible. oVirt – KVM virtualization manager for data centers. Virtuozzo Hybrid – Container-based virtualization for density. Nutanix Community Edition – Hybrid cloud virtualization and hyperconverged storage. KVM – Linux-native virtualization technology.

Storage Solutions

Nextcloud – Encrypted file storage and collaboration platform.

GlusterFS – Distributed filesystem for scalable storage aggregation. HekaFS – Distributed filesystem with secure tenant isolation. JuiceFS – Cloud-native filesystem for big data, AI/ML applications. LizardFS – Geo-redundant distributed file system for enterprise. SeaweedFS – Lightweight scalable distributed object/file storage. Zenko – Multi-cloud data controller for unified storage management. CubeFS – Cloud-native storage with S3, HDFS, POSIX protocols. MooseFS – POSIX-compliant distributed file system at petabyte scale. Swift (OpenStack) – Object storage for OpenStack clouds. Garage – S3-compatible object storage for self-hosting/cloud. lakeFS – Git-like version control for object storage data lakes. Hadoop – Distributed storage and processing for big data workloads. Lustre – High-performance distributed file system for HPC. OpenFiler – SAN/NAS storage solution with web management. OpenMediaVault – NAS for home/SMB, web-based management and plugins. Kopia – Efficient backup tool for cloud/local storage. BorgBackup – Secure deduplicating backup program. Restic – Fast, secure backup program for files and directories.

Infrastructure as Code (IaC)

Terraform & OpenTofu – Leading declarative IaC tools. Pulumi – Code-centric IaC with mainstream languages. Ansible – Agentless automation and provisioning. Crossplane – Kubernetes-native cloud resource provisioning. Terragrunt – Terraform wrapper for modular configs.

Remote Access

RustDesk - A fast, open-source remote desktop software that supports self-hosted servers for data sovereignty and enhanced security. It offers cross-platform support and is often recommended as a free alternative to TeamViewer with strong encryption and ease of use. Remmina - A free and open-source remote desktop client primarily for Linux and Unix systems, supporting multiple protocols including RDP, VNC, NX, and SSH. Apache Guacamole - A clientless remote desktop gateway that supports standard protocols like VNC, RDP, and SSH. It allows access via a web browser without needing client software installation, making it versatile for desktop management. TigerVNC - An open-source VNC implementation providing high-performance remote desktop access. It supports most systems and is a strong choice for those preferring VNC protocol-based remote access. DWService - An open-source remote access service accessible from any browser. It requires software installation only on the host machine and supports unattended access. It also features a mobile app.

Windows Only

mRemoteNG - An open-source, multi-protocol, tabbed remote connections manager for Windows

CI/CD & DevOps Automation

Jenkins – Widely adopted automation server for CI/CD. GitLab CI/CD – Built-in pipelines inside GitLab. Argo CD – Kubernetes GitOps continuous delivery. Flux – GitOps toolkit for Kubernetes automation. Tekton – Cloud-native CI/CD pipelines built for Kubernetes. Drone – Container native CI/CD automation.

DevSecOps & Security

Checkov – Static analysis of IaC for security issues. TFLint – Terraform configuration linter. Open Policy Agent (OPA) – Policy enforcement engine for cloud-native apps. Kubescape – Kubernetes security and compliance scans. Terrascan – Scans Infrastructure as Code (IaC) for security misconfigurations; supports multi-cloud environments and integrates into CI/CD pipelines. ZAP (OWASP Zed Attack Proxy) – Popular web application security scanner detecting vulnerabilities like XSS and SQL injection with automated and manual testing modes. Semgrep – Fast, customizable static analysis tool for scanning source code vulnerabilities across multiple languages in CI/CD workflows. Trivy – Comprehensive vulnerability scanner for container images, IaC files, and source code dependencies. DefectDojo – Application security orchestration platform aggregating vulnerability findings and managing testing workflows. Git-secrets – Prevents committing sensitive information (like passwords or AWS keys) into git repositories by scanning commits. HashiCorp Vault – Secret management tool for secure storage, dynamic secrets, and identity-based access control. Anchore Engine – Container scanning and policy evaluation platform for registry and CI/CD integration. Prowler – AWS security best practices assessment, auditing, and hardening tool. KICS (Keeping Infrastructure as Code Secure) – Open source IaC scanning tool detecting security issues and compliance violations. Nancy – Dependency vulnerability scanner for Go projects. Npm-audit – Vulnerability scanner for Node.js package dependencies integrated with npm. Spectral – Flexible JSON/YAML linter for API description and config files, aiding in security and best practices.

Monitoring & Observability

Prometheus – Monitoring and alerting toolkit for metrics. Grafana – Data visualization and dashboard platform. VictoriaMetrics – Scalable time series database for monitoring. Elasticsearch / OpenSearch – Search engine and log analytics.

Networking Tools

Nginx - High-performance web server and reverse proxy for load balancing and static content delivery. HAProxy - Robust load balancer and reverse proxy widely used for traffic distribution in critical environments. Caddy - Simple web server with automatic HTTPS and easy configuration for quick, secure deployments. Traefik - Dynamic reverse proxy with automatic service discovery for containerized and microservices environments. OpenWISP - Network management system automating configuration, monitoring, and VPN provisioning for Linux networks. Ansible - Agentless automation tool for network and system configuration, orchestration, and deployment. NetBox - Network infrastructure management tool for modeling, documenting, and automating network operations. Zabbix - Enterprise-class monitoring solution for networks, servers, and applications with auto-discovery. OpenNMS - Enterprise-grade open-source network monitoring platform with scalable and extensible architecture. Nagios Core - Flexible monitoring system for networked devices with plugin architecture and alerting capabilities.

ERP & Business Management

Odoo – Modular business management suite with ERP, CRM, and more. ERPNext – All-in-one open source ERP for business processes. Dolibarr – ERP/CRM for SMEs with invoicing and inventory. Apache OFBiz – Java-based enterprise ERP and automation. ADempiere – Community-driven ERP for finance, operations, and supply chain. Tryton – Modular Python ERP system. Corteza Low-Code – Low-code business process automation and CRM. Onfinity – Cloud-native ERP solution for scalability.

CRM & Sales

SuiteCRM – Feature-rich CRM fork of SugarCRM. EspoCRM – Lightweight CRM for automating sales and support. OroCRM – Multi-channel CRM for advanced reporting and e-commerce. Vtiger CRM – All-in-one sales, marketing, and helpdesk CRM. YetiForce – Customizable CRM with project management and inventory.

Marketing & Email Automation

Mautic – Marketing automation for email campaigns and lead tracking. Mailtrain – Node.js self-hosted newsletter app. phpList – Bulk email manager for newsletters. ListMonk – High-performance newsletter manager in Go.

E-Commerce & POS

OpenCart – E-commerce platform with extensible modules. PrestaShop – E-commerce engine with rich module ecosystem. Saleor – Headless commerce platform with Python/GraphQL. Bagisto – Laravel-based shopping cart and POS. Magento Open Source – Enterprise-grade e-commerce. Zen Cart – PHP-based customizable storefront. Odoo eCommerce – Store builder inside Odoo ERP.

Accounting & Finance

GnuCash – Accounting for small business and personal finance. TurboCASH – SME accounting with reporting and invoicing. xTuple – ERP including accounting, CRM, inventory. Invoice Ninja – Invoicing and billing for freelancers/SMBs. Firefly III – Personal finance and expense management.

HR & Payroll

Sentrifugo – HRMS with employee, appraisal, and recruitment tools. OrangeHRM – Recruitment, leave, and performance tracking platform. Odoo HR – HR management in the Odoo suite.

Project Management & Collaboration

OpenProject – Agile and classic project management for teams. Taiga – Scrum/Kanban project boards. Focalboard – Open source Trello alternative for task management. WeKan – Collaborative Kanban boards. Kanboard – Minimal Kanban with automation. AppFlowy – Notion-style workspace for docs and tasks. Penpot – Collaborative design and prototyping.

Helpdesk & Support

Zammad – Modern helpdesk platform with ticket management. Faveo Helpdesk – Ticketing system for businesses. FreeScout – Shared inbox and helpdesk management.

Knowledge Management & Docs

Wiki.js – Modern Node.js wiki with various data sources. BookStack – Documentation and knowledge base platform. XWiki – Feature-rich enterprise wiki, Confluence alternative.

Team Communication

Mattermost – Secure, self-hosted team chat. Rocket.Chat – Customizable chat with audio/video. Zulip – Threaded team chat solution. Jitsi – Encrypted video calling and conferencing. Element – Matrix-based secure messenger for teams.

CMS & Website Builders

WordPress – Leading CMS with plugin ecosystem. Ghost – Publishing and newsletter platform. Strapi – Headless CMS for API-driven content. Webstudio – No-code responsive website builder.

Automation & Integration

n8n – Workflow automation for business data. Appsmith – Low-code builder for internal apps.

Security & Password Management

Bitwarden – Encrypted password manager for individuals and teams.

AI, Low-Code & Emerging Tools

Budibase – Low-code platform for building business web apps. Activepieces – Automation similar to Zapier, open source. Eidolon AI – AI-powered software development automation. MindsDB – Machine learning integration for applications and databases. Mistral Devstral – Open source LLM toolkit for developers. Grist – Spreadsheet-database hybrid for business data. Plane – Project and issue tracking for teams. Documenso – Document signing and management. Dub.co – URL management and shortening for marketing.