A clear default stack has emerged among people self-hosting in 2026: Nextcloud for files, Immich for photos, Vaultwarden for passwords, n8n for automation, Jellyfin for media, Uptime Kuma for monitoring, Gitea for Git hosting, Paperless-ngx for document management, and Home Assistant for home automation. Beyond personal use, a growing number of people are also self-hosting the business software they’d otherwise pay monthly SaaS fees for — CRM, ERP, and accounting tools included.
The Default Self-Hosted Stack in 2026
These nine apps come up most consistently across self-hosting communities and recommendation lists — well-documented, actively maintained, and with strong track records:
| App | Category | Why It’s Popular |
|---|---|---|
| Nextcloud | File sync & collaboration | The most universally cited self-hosted app; file sync, calendar, contacts, and document collaboration in one platform |
| Immich | Photo backup | The default self-hosted alternative to Google Photos; automatic mobile backup and facial recognition |
| Vaultwarden | Password manager | Lightweight, Bitwarden-client-compatible; runs on minimal resources |
| n8n | Workflow automation | Visual, no-code automation connecting hundreds of services |
| Jellyfin | Media server | Self-hosted alternative to Plex with no licensing restrictions |
| Uptime Kuma | Monitoring | Lightweight uptime and status-page monitoring for self-hosted stacks |
| Gitea | Git hosting | Lightweight GitHub/GitLab alternative; a single low-resource binary rather than a full platform |
| Paperless-ngx | Document management | OCR-searchable document archive; scan and digitize paperwork with full-text search |
| Home Assistant | Home automation | The default open-source home automation hub; also increasingly self-hosted alongside other apps on the same VPS by users running smart-home dashboards remotely |
All nine run comfortably via Docker Compose, meaning several apps can share one VPS with minimal overhead.
Nextcloud, n8n, and WireGuard are available as free 1-click installations on any Contabo Core VPS, Performance VPS, or Max Performance VPS — no manual Docker configuration required. The rest install cleanly via Docker Compose, and several apps can comfortably share one VPS.
Replacing Business SaaS Tools, Not Just Personal Apps
If you’re not sure where to start because you’re picturing personal productivity apps, it’s worth widening the frame: a meaningful share of what people self-host to cut SaaS costs is actual business software — CRM, ERP, and accounting systems, not just file storage and password managers.
| Business Need | SaaS You’re Replacing | Self-Hosted Alternative |
|---|---|---|
| CRM | Salesforce, HubSpot | Self-hosted CRM options such as those built on open-source CRM frameworks |
| ERP / accounting | NetSuite, QuickBooks Online | Odoo (modular ERP) or ERPNext (integrated ERP/accounting) |
| File storage & collaboration | Google Workspace, Dropbox | Nextcloud |
| Password management | 1Password, LastPass | Vaultwarden |
| Workflow automation | Zapier, Make | n8n |
ERP systems (Odoo, ERPNext) are meaningfully heavier than the personal-productivity apps above — size the VPS accordingly, covered below.
Odoo and ERPNext are meaningfully heavier than the personal-productivity apps above — an ERP system touches inventory, accounting, and often manufacturing or HR modules at once, so it needs more sustained CPU and RAM than a password manager or file sync tool. Size the VPS for the ERP specifically rather than assuming the same small instance that runs your personal stack will handle it too.
How to Start: A Phased Migration Plan
The common approach is a phased migration, not an all-at-once switch: replace one SaaS tool at a time, starting with lower-risk, high-value apps before moving to anything business-critical.
- Start with a password manager (Vaultwarden) — low risk, immediate cost savings, and a good first test of running a self-hosted service reliably.
- Move to file storage and collaboration (Nextcloud) next — higher value, still relatively low risk if something needs a rollback.
- Add automation (n8n) once you’re comfortable managing a couple of running services — this is where a lot of the ongoing SaaS-fee savings show up.
- Only move business-critical systems (CRM, ERP/accounting) once you’ve run the lower-stakes tools reliably for a few months and have a real backup routine in place.
The operational trade-off is the same at every step: you are responsible for updates, backups, and security once you self-host. That’s a real cost in time, not just a footnote — budget for it honestly rather than treating self-hosting as free.
Sizing Your VPS for a Self-Hosted Stack
For the personal-productivity stack (Nextcloud, Immich, Vaultwarden, n8n, Jellyfin, Uptime Kuma, Gitea, Paperless-ngx, Home Assistant) running together for an individual or small team, a Contabo Cloud VPS 4 (4 vCPU, 8 GB RAM, 100 GB SSD, €5.24/mo on a 24-month term) handles most of the list comfortably — this replaces what would otherwise be roughly €50–150/month in per-user SaaS costs for a small team, depending on how many tools and users you’re consolidating. For a business system like Odoo or ERPNext specifically, plan for more headroom — a Cloud VPS 8 or higher (8 vCPU, 24 GB RAM) is a more realistic starting point once real business data and multiple concurrent users are involved, though the right size still depends on module count and usage.
FAQ: Self-Hosting Open-Source Apps in 2026
What are the most popular open-source applications people self-host on a VPS in 2026?
The most consistently recommended set is Nextcloud (files), Immich (photos), Vaultwarden (passwords), n8n (automation), Jellyfin (media), Uptime Kuma (monitoring), Gitea (Git hosting), Paperless-ngx (documents), and Home Assistant (home automation) — all well-documented, actively maintained, and able to run together on one modestly sized VPS.
I want to stop paying monthly SaaS fees and self-host my business tools — where do I start?
Start with one low-risk tool, not your most critical system — a password manager (Vaultwarden) or file storage (Nextcloud) first. Once that’s running reliably, move to automation (n8n), and only migrate business-critical systems like CRM or ERP (Odoo, ERPNext) after you’ve built confidence and a real backup routine. Budget time for updates and security yourself — that’s the real cost of self-hosting, not the server bill.
Can I really replace business software like CRM and ERP with self-hosted tools?
Yes — Odoo and ERPNext are the two most commonly cited self-hosted ERP/accounting systems, and open-source CRM options exist as well. They require meaningfully more server resources than personal productivity apps, so size the VPS for the specific system rather than assuming a small instance will handle it.
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