3 Open Source alternatives to HubSpot in 2026
We compare 3 self-hostable tools you can deploy on your own server in minutes, with license, tech stack and a ready-to-copy docker-compose.
Quick comparison
Sorted by featured first, then GitHub stars as a tiebreaker — the same rule we use across the whole site.
Detailed profile of each alternative
Alternative to Salesforce, HubSpot
Modern open source CRM, an alternative to Salesforce.
Alternative to Salesforce, HubSpot
Modular enterprise suite with CRM, an alternative to Salesforce/HubSpot.
Alternative to HubSpot
Marketing automation, an open source alternative to HubSpot Marketing.
How much does HubSpot cost, and how much can you save?
HubSpot costs $20/mo per user. Self-hosting the alternative, you only pay for the server — usually a few dollars a month.
Calculate your exact savings in the SaaS Audit →Already know which one you want?
Add Twenty to the Stack Builder and generate a ready-to-deploy docker-compose.yml, alone or alongside the rest of your stack.
Build my stackFrequently asked questions
Do I need Docker to self-host a HubSpot alternative?
Yes, for all 3: each one has a ready-to-copy docker-compose.yml. You just need Docker installed on your server.
How much RAM do I need at minimum?
The lightest option on this list is Twenty, which runs on as little as 1GB of RAM — enough for a cheap VPS.
Are they all 100% free, or are there paid features like on HubSpot?
1 out of 3 are 100% FOSS. The rest are Open-Core: the core is free and self-hostable, but some advanced feature may stay paid — we call it out on each tool's page.