Follow Up Boss alternatives · CRM
Open-source alternatives to Follow Up Boss
Follow Up Boss is not described as open source on its own site. 6 of the 72 other CRM tools in this directory are open source, according to their own sites.
Follow Up Boss is a paid product with a free trial, starting at $58 per user / month, billed annually ($69 billed monthly). All of them are free or have a free plan.
6 tools · Listings checked up to Nov 12, 2026 · Where the facts come from
How each one differs from Follow Up Boss
- Free plan · from $31.10/mo
Odoo CRM
Open-source CRM app from the Odoo business suite
- Odoo CRM starts at $31.10 per user / month, billed yearly ($38.90 billed monthly). Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- Odoo CRM has a free plan. Follow Up Boss does not, though it has a free trial.
- Only Odoo CRM lists iOS and Android apps.
- Odoo CRM is open source and self-hostable, according to its own site.
- Free plan · from $9/mo
Twenty
Open-source CRM with a custom data model, cloud or self-hosted
- Twenty starts at $9 per user / month, billed yearly ($12 billed monthly). Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- Twenty has a free plan. Follow Up Boss does not, though it has a free trial.
- Twenty is open source and self-hostable, according to its own site.
- Twenty also covers AI agents.
- Free plan · from £130/mo
SuiteCRM
Open-source CRM with no per-user license fees
- SuiteCRM starts at £130 / month, billed annually excl. VAT, unlimited users (£143 billed monthly). Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- SuiteCRM has a free plan. Follow Up Boss does not, though it has a free trial.
- SuiteCRM is open source and self-hostable, according to its own site.
- SuiteCRM also covers marketing automation.
- Free plan · from $15/mo
EspoCRM
Open-source CRM you can self-host for free or rent in the cloud
- EspoCRM starts at $15 per user / month, minimum 3 users, billed for 6 months or 1 year. Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- EspoCRM has a free plan. Follow Up Boss does not, though it has a free trial.
- EspoCRM is open source and self-hostable, according to its own site.
- EspoCRM also covers kanban boards.
- Free plan · from $12/mo
Vtiger
All-in-one CRM with a free cloud plan and an open-source edition
- Vtiger starts at $12 per user / month, billed annually ($15 billed monthly). Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- Vtiger has a free plan. Follow Up Boss does not, though it has a free trial.
- Only Vtiger lists iOS and Android apps.
- Vtiger is open source and self-hostable, according to its own site.
- Free plan · from $9/mo
Monica Personal CRM
Open-source personal CRM for friends, family and colleagues
- Monica Personal CRM starts at $9 / month per account, or $90 billed yearly. Follow Up Boss starts at $58 per user / month, billed annually ($69 billed monthly).
- Monica Personal CRM has a free plan. Follow Up Boss does not, though it has a free trial.
- Monica Personal CRM is open source and self-hostable, according to its own site.
- Monica Personal CRM also covers notes and daily notes.
Common questions
Is there an open-source alternative to Follow Up Boss?
Yes. Odoo CRM, Twenty, SuiteCRM, EspoCRM, Vtiger and Monica Personal CRM are open source, according to their own sites.
Is Follow Up Boss open source?
Follow Up Boss is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Follow Up Boss: the alternatives its listing names first, then the tools that share the most features with it.