# Open Source Business & SaaS Tools

### Cloud Infrastructure & Virtualization Platforms

[Ubicloud](https://www.ubicloud.com/) – IaaS platform with compute, block storage, networking, and managed DB services.\
[Proxmox VE](https://proxmox.com/en/proxmox-ve) – Virtualization with KVM & LXC, clustering, backup.\
[OpenStack](https://www.openstack.org/) – Scalable IaaS for compute, network, storage.\
[XCP-ng](https://xcp-ng.org/) – Open source hypervisor, XenServer compatible.\
[oVirt](https://www.ovirt.org/) – KVM virtualization manager for data centers.\
[Virtuozzo Hybrid](https://www.virtuozzo.com/) – Container-based virtualization for density.\
[Nutanix Community Edition](https://www.nutanix.com/products/community-edition) – Hybrid cloud virtualization and hyperconverged storage.\
[KVM](https://www.linux-kvm.org/) – Linux-native virtualization technology.

### Storage Solutions

[Nextcloud](https://nextcloud.com/) – Encrypted file storage and collaboration platform.

[GlusterFS](https://www.gluster.org/) – Distributed filesystem for scalable storage aggregation.\
[HekaFS](https://github.com/hekaheka/HekaFS) – Distributed filesystem with secure tenant isolation.\
[JuiceFS](https://juicefs.com/) – Cloud-native filesystem for big data, AI/ML applications.\
[LizardFS](https://lizardfs.com/) – Geo-redundant distributed file system for enterprise.\
[SeaweedFS](https://github.com/seaweedfs/seaweedfs) – Lightweight scalable distributed object/file storage.\
[Zenko](https://www.zenko.io/) – Multi-cloud data controller for unified storage management.\
[CubeFS](https://cubefs.io/) – Cloud-native storage with S3, HDFS, POSIX protocols.\
[MooseFS](https://moosefs.com/) – POSIX-compliant distributed file system at petabyte scale.\
[Swift (OpenStack)](https://docs.openstack.org/swift/) – Object storage for OpenStack clouds.\
[Garage](https://garagehq.deuxfleurs.fr/) – S3-compatible object storage for self-hosting/cloud.\
[lakeFS](https://lakefs.io/) – Git-like version control for object storage data lakes.\
[Hadoop](https://hadoop.apache.org/) – Distributed storage and processing for big data workloads.\
[Lustre](https://www.lustre.org/) – High-performance distributed file system for HPC.\
[OpenFiler](https://www.openfiler.com/) – SAN/NAS storage solution with web management.\
[OpenMediaVault](https://www.openmediavault.org/) – NAS for home/SMB, web-based management and plugins.\
[Kopia](https://kopia.io/) – Efficient backup tool for cloud/local storage.\
[BorgBackup](https://borgbackup.readthedocs.io/) – Secure deduplicating backup program.\
[Restic](https://restic.net/) – Fast, secure backup program for files and directories.<br>

### Infrastructure as Code (IaC)

[Terraform](https://www.terraform.io/) & [OpenTofu](https://opentofu.org/) – Leading declarative IaC tools.\
[Pulumi](https://www.pulumi.com/) – Code-centric IaC with mainstream languages.\
[Ansible](https://www.ansible.com/) – Agentless automation and provisioning.\
[Crossplane](https://crossplane.io/) – Kubernetes-native cloud resource provisioning.\
[Terragrunt](https://terragrunt.gruntwork.io/) – Terraform wrapper for modular configs.

### Remote Access

[RustDesk](https://rustdesk.com/) - 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](https://remmina.org/) - 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](https://guacamole.apache.org/) - 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](https://tigervnc.org/) - 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](https://www.dwservice.net/) - 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](https://mremoteng.org/) - An open-source, multi-protocol, tabbed remote connections manager for Windows<br>

### CI/CD & DevOps Automation

[Jenkins](https://www.jenkins.io/) – Widely adopted automation server for CI/CD.\
[GitLab CI/CD](https://about.gitlab.com/stages-devops-lifecycle/) – Built-in pipelines inside GitLab.\
[Argo CD](https://argo-cd.readthedocs.io/) – Kubernetes GitOps continuous delivery.\
[Flux](https://fluxcd.io/) – GitOps toolkit for Kubernetes automation.\
[Tekton](https://tekton.dev/) – Cloud-native CI/CD pipelines built for Kubernetes.\
[Drone](https://drone.io/) – Container native CI/CD automation.

### DevSecOps & Security

[Checkov](https://www.checkov.io/) – Static analysis of IaC for security issues.\
[TFLint](https://github.com/terraform-linters/tflint) – Terraform configuration linter.\
[Open Policy Agent (OPA)](https://www.openpolicyagent.org/) – Policy enforcement engine for cloud-native apps.\
[Kubescape](https://www.kubescape.io/) – Kubernetes security and compliance scans.\
[Terrascan](https://github.com/accurics/terrascan) – Scans Infrastructure as Code (IaC) for security misconfigurations; supports multi-cloud environments and integrates into CI/CD pipelines.\
[ZAP (OWASP Zed Attack Proxy)](https://www.zaproxy.org/) – Popular web application security scanner detecting vulnerabilities like XSS and SQL injection with automated and manual testing modes.\
[Semgrep](https://semgrep.dev/) – Fast, customizable static analysis tool for scanning source code vulnerabilities across multiple languages in CI/CD workflows.\
[Trivy](https://aquasecurity.github.io/trivy/) – Comprehensive vulnerability scanner for container images, IaC files, and source code dependencies.\
[DefectDojo](https://defectdojo.github.io/) – Application security orchestration platform aggregating vulnerability findings and managing testing workflows.\
[Git-secrets](https://github.com/awslabs/git-secrets) – Prevents committing sensitive information (like passwords or AWS keys) into git repositories by scanning commits.\
[HashiCorp Vault](https://www.vaultproject.io/) – Secret management tool for secure storage, dynamic secrets, and identity-based access control.\
[Anchore Engine](https://anchore.com/opensource/) – Container scanning and policy evaluation platform for registry and CI/CD integration.\
[Prowler](https://github.com/prowler-cloud/prowler) – AWS security best practices assessment, auditing, and hardening tool.\
[KICS (Keeping Infrastructure as Code Secure)](https://kics.io/) – Open source IaC scanning tool detecting security issues and compliance violations.\
[Nancy](https://github.com/sonatype-nexus-community/nancy) – Dependency vulnerability scanner for Go projects.\
[Npm-audit](https://docs.npmjs.com/cli/v9/commands/npm-audit) – Vulnerability scanner for Node.js package dependencies integrated with npm.\
[Spectral](https://stoplight.io/open-source/spectral/) – Flexible JSON/YAML linter for API description and config files, aiding in security and best practices.

### Monitoring & Observability

[Prometheus](https://prometheus.io/) – Monitoring and alerting toolkit for metrics.\
[Grafana](https://grafana.com/) – Data visualization and dashboard platform.\
[VictoriaMetrics](https://victoriametrics.com/) – Scalable time series database for monitoring.\
[Elasticsearch](https://www.elastic.co/elasticsearch/) / [OpenSearch](https://opensearch.org/) – Search engine and log analytics.

### Networking Tools

[Nginx](https://nginx.org/) - High-performance web server and reverse proxy for load balancing and static content delivery.\
[HAProxy](http://www.haproxy.org/) - Robust load balancer and reverse proxy widely used for traffic distribution in critical environments.\
[Caddy](https://caddyserver.com/) - Simple web server with automatic HTTPS and easy configuration for quick, secure deployments.\
[Traefik](https://traefik.io/) - Dynamic reverse proxy with automatic service discovery for containerized and microservices environments.\
[OpenWISP](https://openwisp.org/) - Network management system automating configuration, monitoring, and VPN provisioning for Linux networks.\
[Ansible](https://www.ansible.com/) - Agentless automation tool for network and system configuration, orchestration, and deployment.\
[NetBox](https://netbox.dev/) - Network infrastructure management tool for modeling, documenting, and automating network operations.\
[Zabbix](https://www.zabbix.com/) - Enterprise-class monitoring solution for networks, servers, and applications with auto-discovery.\
[OpenNMS](https://www.opennms.com/) - Enterprise-grade open-source network monitoring platform with scalable and extensible architecture.\
[Nagios Core](https://www.nagios.org/) - Flexible monitoring system for networked devices with plugin architecture and alerting capabilities.

### ERP & Business Management

[Odoo](https://www.odoo.com/) – Modular business management suite with ERP, CRM, and more.\
[ERPNext](https://erpnext.com/) – All-in-one open source ERP for business processes.\
[Dolibarr](https://www.dolibarr.org/) – ERP/CRM for SMEs with invoicing and inventory.\
[Apache OFBiz](https://ofbiz.apache.org/) – Java-based enterprise ERP and automation.\
[ADempiere](https://www.adempiere.net/) – Community-driven ERP for finance, operations, and supply chain.\
[Tryton](https://www.tryton.org/) – Modular Python ERP system.\
[Corteza Low-Code](https://cortezaproject.org/) – Low-code business process automation and CRM.\
[Onfinity](https://onfinity.io/) – Cloud-native ERP solution for scalability.

### CRM & Sales

[SuiteCRM](https://suitecrm.com/) – Feature-rich CRM fork of SugarCRM.\
[EspoCRM](https://www.espocrm.com/) – Lightweight CRM for automating sales and support.\
[OroCRM](https://oroinc.com/orocrm) – Multi-channel CRM for advanced reporting and e-commerce.\
[Vtiger CRM](https://www.vtiger.com/open-source-crm/) – All-in-one sales, marketing, and helpdesk CRM.\
[YetiForce](https://yetiforce.com/en) – Customizable CRM with project management and inventory.

### Marketing & Email Automation

[Mautic](https://www.mautic.org/) – Marketing automation for email campaigns and lead tracking.\
[Mailtrain](https://mailtrain.org/) – Node.js self-hosted newsletter app.\
[phpList](https://www.phplist.org/) – Bulk email manager for newsletters.\
[ListMonk](https://listmonk.app/) – High-performance newsletter manager in Go.

### E-Commerce & POS

[OpenCart](https://www.opencart.com/) – E-commerce platform with extensible modules.\
[PrestaShop](https://www.prestashop.com/) – E-commerce engine with rich module ecosystem.\
[Saleor](https://saleor.io/) – Headless commerce platform with Python/GraphQL.\
[Bagisto](https://bagisto.com/en/) – Laravel-based shopping cart and POS.\
[Magento Open Source](https://magento.com/products/magento-open-source) – Enterprise-grade e-commerce.\
[Zen Cart](https://www.zen-cart.com/) – PHP-based customizable storefront.\
[Odoo eCommerce](https://www.odoo.com/page/ecommerce) – Store builder inside Odoo ERP.

### Accounting & Finance

[GnuCash](https://www.gnucash.org/) – Accounting for small business and personal finance.\
[TurboCASH](https://turbocash.net/) – SME accounting with reporting and invoicing.\
[xTuple](https://xtuple.com/) – ERP including accounting, CRM, inventory.\
[Invoice Ninja](https://www.invoiceninja.com/) – Invoicing and billing for freelancers/SMBs.\
[Firefly III](https://www.firefly-iii.org/) – Personal finance and expense management.

### HR & Payroll

[Sentrifugo](https://www.sentrifugo.com/) – HRMS with employee, appraisal, and recruitment tools.\
[OrangeHRM](https://www.orangehrm.com/open-source/) – Recruitment, leave, and performance tracking platform.\
[Odoo HR](https://www.odoo.com/app/employees) – HR management in the Odoo suite.

### Project Management & Collaboration

[OpenProject](https://www.openproject.org/) – Agile and classic project management for teams.\
[Taiga](https://www.taiga.io/) – Scrum/Kanban project boards.\
[Focalboard](https://www.focalboard.com/) – Open source Trello alternative for task management.\
[WeKan](https://wekan.github.io/) – Collaborative Kanban boards.\
[Kanboard](https://kanboard.org/) – Minimal Kanban with automation.\
[AppFlowy](https://www.appflowy.io/) – Notion-style workspace for docs and tasks.\
[Penpot](https://penpot.app/) – Collaborative design and prototyping.

### Helpdesk & Support

[Zammad](https://zammad.org/) – Modern helpdesk platform with ticket management.\
[Faveo Helpdesk](https://www.faveohelpdesk.com/open-source/) – Ticketing system for businesses.\
[FreeScout](https://freescout.helpdesk.io/) – Shared inbox and helpdesk management.

### Knowledge Management & Docs

[Wiki.js](https://js.wiki/) – Modern Node.js wiki with various data sources.\
[BookStack](https://www.bookstackapp.com/) – Documentation and knowledge base platform.\
[XWiki](https://www.xwiki.org/) – Feature-rich enterprise wiki, Confluence alternative.

### Team Communication

[Mattermost](https://mattermost.com/) – Secure, self-hosted team chat.\
[Rocket.Chat](https://rocket.chat/) – Customizable chat with audio/video.\
[Zulip](https://zulip.com/) – Threaded team chat solution.\
[Jitsi](https://jitsi.org/) – Encrypted video calling and conferencing.\
[Element](https://element.io/) – Matrix-based secure messenger for teams.

### CMS & Website Builders

[WordPress](https://wordpress.org/) – Leading CMS with plugin ecosystem.\
[Ghost](https://ghost.org/) – Publishing and newsletter platform.\
[Strapi](https://strapi.io/) – Headless CMS for API-driven content.\
[Webstudio](https://webstudio.so/) – No-code responsive website builder.

### Automation & Integration

[n8n](https://n8n.io/) – Workflow automation for business data.\
[Appsmith](https://appsmith.com/) – Low-code builder for internal apps.

### Security & Password Management

[Bitwarden](https://bitwarden.com/) – Encrypted password manager for individuals and teams.

### AI, Low-Code & Emerging Tools

[Budibase](https://budibase.com/) – Low-code platform for building business web apps.\
[Activepieces](https://activepieces.com/) – Automation similar to Zapier, open source.\
[Eidolon AI](https://eidolon-ai.com/) – AI-powered software development automation.\
[MindsDB](https://mindsdb.com/) – Machine learning integration for applications and databases.\
[Mistral Devstral](https://mistral.ai/) – Open source LLM toolkit for developers.\
[Grist](https://www.getgrist.com/) – Spreadsheet-database hybrid for business data.\
[Plane](https://plane.dev/) – Project and issue tracking for teams.\
[Documenso](https://documenso.com/) – Document signing and management.\
[Dub.co](https://dub.co/) – URL management and shortening for marketing.