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Open Source Stack for Small Businesses: Everything You Need

·OSSAlt Team
small-businessopen-sourceself-hostingguide2026

Open Source Stack for Small Businesses: Everything You Need

Small businesses waste thousands on SaaS. Here's every tool you need to run a business — all open source, all self-hosted, all for under $30/month.

The Complete Small Business Stack

Communication & Collaboration

NeedToolWhat It Does
Team chatMattermostChannels, threads, file sharing, mobile apps
Video callsJitsi MeetInstant video meetings, no accounts needed
EmailGoogle Workspace (keep SaaS)Email is better managed
File sharingNextcloudFiles, calendar, contacts, office docs

Customer-Facing

NeedToolWhat It Does
WebsiteNext.js on CoolifyProfessional website
CRMTwentyContact management, sales pipeline
Customer supportChatwootLive chat, email support, WhatsApp
SchedulingCal.comBook meetings with clients
FormsFormbricksContact forms, surveys, feedback

Operations

NeedToolWhat It Does
Project managementPlaneTasks, sprints, roadmaps
DocumentationOutlineInternal wiki, SOPs, knowledge base
PasswordsVaultwardenShared passwords for team
Automationn8nConnect tools, automate workflows

Marketing

NeedToolWhat It Does
AnalyticsPlausibleWebsite traffic, referrers, conversions
Email marketingListmonkNewsletters, drip campaigns
Link managementDubBranded short links with analytics
SEOPlausible + GSCTrack organic traffic

Finance

NeedToolWhat It Does
InvoicingInvoice NinjaCreate, send, track invoices
E-signaturesDocumensoDigital contract signing
Expense trackingInvoice NinjaTrack business expenses

IT & Security

NeedToolWhat It Does
MonitoringUptime KumaMonitor all services
ObservabilityGrafanaServer metrics and alerts
AuthenticationKeycloakSSO for all tools
BackupsRestic + BackblazeAutomated encrypted backups

Infrastructure Setup

Server Architecture

ServerSpecsMonthly CostTools
App Server 14 vCPU, 8 GB$7Mattermost, Plane, Outline, Cal.com, Vaultwarden
App Server 24 vCPU, 8 GB$7Chatwoot, Twenty, Invoice Ninja, Listmonk, n8n
Web + Monitoring2 vCPU, 4 GB$4.50Website, Plausible, Uptime Kuma, Grafana
Database2 vCPU, 4 GB$4.50PostgreSQL, Redis (shared)
Additional CostsMonthly
Backblaze B2 backups$3
Amazon SES (email sending)$3
Domains (2-3)$3
Total$32/month

SaaS Equivalent Cost (15-person business)

CategorySaaS ToolsMonthly Cost
Slack Pro$8.75 × 15$131
Zoom Business$13.33 × 15$200
Google Workspace$14 × 15$210
Notion Business$18 × 15$270
HubSpot CRM$20 × 10$200
Intercom$39 × 5 agents$195
Calendly Teams$12 × 15$180
Jira Standard$8.15 × 15$122
1Password Business$8 × 15$120
Mailchimp Standard$100
FreshBooks Plus$60
Plausible Cloud$19
DocuSign Standard$45
Total$1,852/month

Self-hosted: $32/month vs SaaS: $1,852/month Annual savings: $21,840 (98% reduction)

Deployment Plan

Phase 1: Week 1 — Foundation

Goal: Basic communication and operations

  1. Set up 4 servers on Hetzner
  2. Install Coolify on App Server 1
  3. Deploy PostgreSQL + Redis on Database server
  4. Deploy Caddy reverse proxy on all servers
  5. Deploy Mattermost (team communication)
  6. Deploy Vaultwarden (password management)
  7. Deploy Uptime Kuma (monitoring)

Phase 2: Week 2 — Customer-Facing

Goal: Tools for serving customers

  1. Deploy Cal.com (client scheduling)
  2. Deploy Chatwoot (customer support)
  3. Deploy Twenty (CRM)
  4. Deploy Formbricks (forms)
  5. Deploy website via Coolify

Phase 3: Week 3 — Operations

Goal: Internal efficiency tools

  1. Deploy Plane (project management)
  2. Deploy Outline (documentation)
  3. Deploy Nextcloud (file sharing)
  4. Deploy n8n (automation)

Phase 4: Week 4 — Marketing & Finance

Goal: Growth and financial tools

  1. Deploy Plausible (analytics)
  2. Deploy Listmonk (email marketing)
  3. Deploy Dub (link management)
  4. Deploy Invoice Ninja (invoicing)
  5. Deploy Documenso (contracts)
  6. Set up Keycloak (SSO for all tools)
  7. Configure automated backups

The ROI

Year 1 (Including Setup Time)

CostAmount
Infrastructure (12 months)$384
Setup time (40 hours × $75/hr)$3,000
Maintenance (3 hours/month × $75)$2,700
Google Workspace (kept)$2,520
Total Year 1$8,604
ComparisonYear 1 Cost
Full SaaS stack$22,224
Self-hosted + Google$8,604
Savings$13,620 (61%)

Year 2+ (No Setup Cost)

ComparisonAnnual Cost
Full SaaS stack$22,224
Self-hosted + Google$5,604
Savings$16,620 (75%)

5-Year Total

Approach5-Year Cost
Full SaaS (5% annual increase)$123,000+
Self-hosted$31,020
5-Year Savings$91,980

The Bottom Line

A 15-person small business can run its entire operation on open source for $32/month instead of $1,852/month on SaaS. That's $21,840/year in savings — enough to hire a part-time employee or invest in growth.

The setup takes about a month of gradual rollout. After that, maintenance is 3 hours/month. The ROI is overwhelming.


Build your complete small business stack at OSSAlt.