Site map
88 published migration paths across 21 categories
Site
- Home
- All migration guides
- Vendor Watch (weekly licensing notes)
- Free migration tools
- My Migration tracker
- RVTools estate analyzer
- Renewal deadline planner
- The Lock-in Index
- Cost calculator
- Glossary
- Methodology & editorial standards
- VMware renewal shock explainer
- About OffVendor
- Contact
Virtualization
- How to choose (buyer's guide)
- VMware vSphere alternatives
- VMware vSphere → Proxmox VE
- VMware vSphere → Microsoft Hyper-V
- VMware vSphere → XCP-ng
- VMware vSphere → Nutanix AHV
- XenServer (Citrix Hypervisor) → XCP-ng
- VMware vSphere → OpenStack
Databases
- How to choose (buyer's guide)
- Oracle Database alternatives
- Oracle Database → PostgreSQL
- Microsoft SQL Server → PostgreSQL
- Oracle Database → Amazon Aurora
- Oracle Database → MySQL
- IBM Db2 → PostgreSQL
- MongoDB → PostgreSQL
Backup & DR
- How to choose (buyer's guide)
- Veeam Backup & Replication → Proxmox Backup Server
- Veritas NetBackup → Bacula
- Commvault → Bacula
- Rubrik → Bacula
Monitoring
- How to choose (buyer's guide)
- Datadog alternatives
- Datadog → Prometheus
- Splunk → Grafana
- Datadog → Grafana
- New Relic → Prometheus
- Dynatrace → Grafana
- SolarWinds → Zabbix
Storage & SAN
- How to choose (buyer's guide)
- NetApp ONTAP → TrueNAS
- Dell PowerStore → Ceph
- Pure Storage FlashArray → Ceph
- HPE Alletra → Ceph
Operating Systems
- How to choose (buyer's guide)
- Red Hat Enterprise Linux alternatives
- CentOS Linux alternatives
- Oracle Linux alternatives
- Red Hat Enterprise Linux → Rocky Linux
- Red Hat Enterprise Linux → AlmaLinux
- CentOS Linux → Rocky Linux
- CentOS Linux → AlmaLinux
- Oracle Linux → Rocky Linux
- Oracle Linux → AlmaLinux
- SUSE Linux Enterprise → Rocky Linux
- Windows Server → Ubuntu Server
Identity & Access
- How to choose (buyer's guide)
- Okta → Keycloak
- Microsoft Entra ID → Keycloak
- Ping Identity → Keycloak
- ForgeRock → Keycloak
Cybersecurity
- How to choose (buyer's guide)
- CrowdStrike Falcon → Wazuh
- SentinelOne → Wazuh
- Symantec Endpoint Security → Wazuh
- Trend Micro → Wazuh
IaC & Secrets
- How to choose (buyer's guide)
- HashiCorp Terraform → OpenTofu
- HashiCorp Vault → OpenBao
- Puppet Enterprise → Ansible
Containers & PaaS
- How to choose (buyer's guide)
- Red Hat OpenShift → Kubernetes (upstream)
- VMware Tanzu → Kubernetes (upstream)
- Mirantis Kubernetes Engine → Kubernetes (upstream)
- Cloud Foundry (Tanzu AS) → Kubernetes (upstream)
Data Warehouse
- How to choose (buyer's guide)
- Snowflake → ClickHouse
- Teradata → ClickHouse
- Amazon Redshift → ClickHouse
- Google BigQuery → ClickHouse
CI/CD & DevOps
- How to choose (buyer's guide)
- GitLab (Premium/Ultimate) → Gitea / Forgejo
- Atlassian Bamboo → Drone CI
- Jenkins → Woodpecker CI
- CircleCI → Woodpecker CI
Load Balancers / ADC
- How to choose (buyer's guide)
- F5 BIG-IP → HAProxy
- Citrix NetScaler ADC → NGINX
- Kemp LoadMaster → HAProxy
- A10 Thunder ADC → HAProxy
Switches & Routers
- How to choose (buyer's guide)
- Cisco Catalyst / Nexus alternatives
- Cisco Catalyst / Nexus → SONiC
- Cisco Catalyst / Nexus → VyOS
- Juniper Networks → VyOS
- Arista Networks → SONiC
Firewalls
- How to choose (buyer's guide)
- Palo Alto Networks → OPNsense
- Fortinet FortiGate → OPNsense
- Check Point → OPNsense
- SonicWall → OPNsense
Message & Streaming
- How to choose (buyer's guide)
- Confluent Platform → Apache Kafka
- IBM MQ → RabbitMQ
- TIBCO EMS → RabbitMQ
- Solace PubSub+ → RabbitMQ
AI & LLMs
- How to choose (buyer's guide)
- OpenAI GPT alternatives
- OpenAI GPT → Llama (Meta)
- OpenAI GPT → Mistral
- Azure OpenAI → Llama (Meta)
Cloud Migration
- How to choose (buyer's guide)
- Amazon Web Services → Microsoft Azure
- Microsoft Azure → Amazon Web Services
- Google Cloud → Amazon Web Services
Cloud Adoption & Repatriation
- How to choose (buyer's guide)
- On-Premise Infrastructure → Amazon Web Services
- Amazon Web Services → On-Premise Infrastructure
VDI & EUC
- How to choose (buyer's guide)
- Citrix DaaS / Virtual Apps & Desktops alternatives
- Citrix DaaS / Virtual Apps & Desktops → Apache Guacamole
- Citrix DaaS / Virtual Apps & Desktops → Kasm Workspaces
- Omnissa Horizon (VMware Horizon) → Apache Guacamole
API Management
- How to choose (buyer's guide)
- Google Apigee alternatives
- Google Apigee → Kong Gateway (OSS)
- Google Apigee → Apache APISIX
- MuleSoft Anypoint → Kong Gateway (OSS)
- Kong Enterprise → Kong Gateway (OSS)
Policies
Prefer XML? The machine-readable sitemap is at /sitemap.xml.