Open-source software stack for IT service providers
For small IT firms and managed service providers that look after other companies' computers and servers, and want their own tools on infrastructure they control.
11 tools · picks reviewed Oct 2026
Your savings
$8,767
per year for a team of 10
$10,987 paid tools today − $2,220 to run it
The stack
Tap a tool for detailsAll 11 tools
Switch off anything you don't pay for today and the savings update.
- Why
- Remote control of client computers through your own relay server, with an address book per client.
- Licence
- AGPL-3.0127.6K stars
- Replaces
- TeamViewer · Business (billed yearly) · $50.90/user/mo · 5 seats · checked Oct 2026 · $3,054/yr
- Why
- One shared queue for client email, phone notes and chat, with SLAs and time accounting; Chatwoot suits chat-first support.
- Licence
- AGPL-3.06.1K stars
- Replaces
- Zendesk · Support Team (billed yearly) · $19/user/mo · 5 seats · checked Oct 2026 · $1,140/yr
- Also good
- Chatwoot
- Why
- Checks every client site and service each minute, with alerts and a status page per client.
- Licence
- MIT93.1K stars
- Replaces
- Better Stack · One responder (billed yearly) · $29/mo · checked Oct 2026 · $348/yr
- Also good
- Gatus
- Why
- Dashboards and alerts for metrics and logs from every client server; Beszel is lighter for basic health checks.
- Licence
- AGPL-3.077.6K stars
- Replaces
- Datadog · Infrastructure Pro (billed yearly) · not counted · $15 per host a month · checked Oct 2026
- Also good
- Beszel
- Why
- Keeps each client's admin logins in its own shared collection; works with the official Bitwarden apps.
- Licence
- AGPL-3.070K stars
- Replaces
- 1Password · Business (billed yearly) · $7.99/user/mo · 10 seats · checked Oct 2026 · $959/yr
- Also good
- Bitwarden
- Why
- One login with two-factor checks for your team's tools and the client portals you run.
- Licence
- MIT26.2K stars
- Replaces
- Okta · Workforce Starter (billed yearly, $1,500 a year minimum) · $6/user/mo · 20 seats · checked Oct 2026 · $1,440/yr
- Also good
- Keycloak
- Why
- Encrypted, deduplicated backups to storage you choose; restic suits scripted server backups.
- Licence
- Apache-2.014.5K stars
- Replaces
- Backblaze Computer Backup · Business, per computer (billed yearly) · $8.25/user/mo · 10 seats · checked Oct 2026 · $990/yr
- Also good
- restic
- Why
- Network diagrams, runbooks and how-tos, organised in a book per client.
- Licence
- MIT19.1K stars
- Replaces
- Confluence · Standard (billed yearly) · $5.42/user/mo · 10 seats · checked Oct 2026 · $650/yr
- Also good
- Wiki.js
- Why
- Team chat with alert channels that your monitoring tools post into.
- Licence
- AGPL-3.039.5K stars
- Replaces
- Slack · Pro (billed yearly) · $7.25/user/mo · 10 seats · checked Oct 2026 · $870/yr
- Also good
- Zulip
- Why
- Billable hours per client and contract, with exports for invoicing.
- Licence
- AGPL-3.0-only5.1K stars
- Replaces
- Harvest · Teams (billed yearly) · $9/user/mo · 10 seats · checked Oct 2026 · $1,080/yr
- Why
- Source-available. Monthly retainers and support contracts invoiced automatically.
- Licence
- Elastic-2.010.4K stars
- Replaces
- QuickBooks · Online Simple Start · $38/mo · checked Oct 2026 · $456/yr
How we calculate
For each paid tool you keep switched on, we take its public list price for the plan shown and multiply it by the seats your team would need. Some tools are only used by part of a team, so a row may count a share of your team or a fixed number of seats; the row says how many. Prices that depend on sales or usage are shown but not counted.
From that we subtract an estimate for running the open-source stack yourself: $165/month plus $2 per person per month (Two 8 vCPU / 16 GB cloud servers, plus storage per person), and any extra running cost a row lists, such as a GPU. The time it takes to set up and maintain the tools is not included.