Formidable Forms alternatives · Forms
Open-source alternatives to Formidable Forms
Formidable Forms is not described as open source on its own site. 15 of the 148 other form and survey tools in this directory are open source, according to their own sites.
Formidable Forms has a free plan. Paid plans start at $79 per year for 1 site, after a first year at $39.50. 13 of them are free or have a free plan.
15 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
The 12 closest to Formidable Forms
- Free plan · from $99/yr
Ninja Forms
WordPress form builder with a free core and paid add-ons
- Ninja Forms starts at $99 per year for 3 sites, after a first year at $59.40. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Ninja Forms is open source, according to its own site.
- Ninja Forms also covers workflow automation.
- Formidable Forms also covers databases and surveys.
- Free
Contact Form 7
Free open-source contact form plugin for WordPress
- Contact Form 7 is free. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Contact Form 7 is open source and self-hostable, according to its own site.
- Formidable Forms also covers databases, templates and surveys.
- From €29.99
RSForm!Pro
Joomla form builder with calculations and conditional fields
- RSForm!Pro starts at €29.99, the entry price shown; billing period and site count not shown. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Formidable Forms has a free plan. RSForm!Pro does not.
- RSForm!Pro is open source, according to its own site.
- Formidable Forms also covers databases, templates and surveys.
- Free plan · from $15/mo
HeyForm
Open-source builder for conversational forms and surveys
- HeyForm starts at $15 per month, billed annually ($18 billed monthly). Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- HeyForm is open source and self-hostable, according to its own site.
- HeyForm also covers no-code.
- Formidable Forms also covers databases.
- Free plan · from $25/mo
OpnForm
Open-source form builder with unlimited submissions
- OpnForm starts at $25 per month, billed yearly ($299); $29 billed monthly. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- OpnForm is open source and self-hostable, according to its own site.
- Formidable Forms also covers databases.
- Free plan · from $39/mo
LimeSurvey
Open-source survey tool, hosted in the cloud or self-hosted
- LimeSurvey starts at $39 per month, billed monthly (charged in EUR, about €34). Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- LimeSurvey is open source and self-hostable, according to its own site.
- LimeSurvey also covers reports.
- Formidable Forms also covers databases.
- Free plan
Formbricks
Open-source survey platform for links, websites and apps
- Formbricks is open source and self-hostable, according to its own site.
- Formbricks also covers workflow automation.
- Formidable Forms also covers databases and forms.
- Free plan · from $100/mo
CommCare
No-code apps for frontline case management and data collection
- CommCare starts at $100 per month, billed annually ($120 billed monthly). Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Only CommCare lists Android and iOS apps.
- CommCare is open source, according to its own site.
- CommCare also covers case management.
- Free plan · from $21/mo
KoboToolbox
Open-source data collection for field surveys, online or offline
- KoboToolbox starts at $21 per month, billed annually ($25 billed monthly); nonprofits have a free plan. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Only KoboToolbox lists an Android app.
- KoboToolbox is open source and self-hostable, according to its own site.
- KoboToolbox also covers reports.
- Free plan · from $199/mo
Open Data Kit
Open-source mobile and web data collection
- Open Data Kit starts at $199 per month, billed yearly ($249 billed monthly). Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Only Open Data Kit lists an Android app.
- Open Data Kit is open source and self-hostable, according to its own site.
- Formidable Forms also covers databases and templates.
- Free
Enketo
Open-source web forms that work offline
- Enketo is free. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- Enketo is open source and self-hostable, according to its own site.
- Formidable Forms also covers databases and templates.
- Free plan · from $559 one-time
SurveyJS
Open-source JavaScript form library with a paid form builder
- SurveyJS starts at $559 once per developer, including updates and support for the first 12 months. Formidable Forms starts at $79 per year for 1 site, after a first year at $39.50.
- SurveyJS is open source and self-hostable, according to its own site.
- SurveyJS also covers no-code.
- Formidable Forms also covers databases and templates.
Common questions
Is there an open-source alternative to Formidable Forms?
Yes. Ninja Forms, Contact Form 7, RSForm!Pro, HeyForm, OpnForm, LimeSurvey, Formbricks, CommCare and 7 more are open source, according to their own sites.
Is Formidable Forms open source?
Formidable Forms is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.
Which of these form and survey tools are free?
Ninja Forms, Contact Form 7, HeyForm, OpnForm, LimeSurvey, Formbricks, CommCare, KoboToolbox and 5 more are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 6, 2026 to Nov 13, 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 Formidable Forms: the alternatives its listing names first, then the tools that share the most features with it.