I'm currently using amforms from a&m impact on a couple of sites. However, it looks like this plugin won't get a craftcms version 3 update. In addition, my requirements for a form plugin have expanded considerably since my clients want more advanced functionality. Therefore, I am now searching for a good alternative.

My requirements are as follows:

1. It should be possible to prepopulate fields with existing data
2. Duplicating forms should be possible
3. Templating completely customizable
4. Ability to dynamically add more rows of fields (like in a reservation for a hotel where you can add more rooms or persons)
5. Validation for at least the basic field types
6. File uploads should be possible
7. Custom conditions for custom fields (like a checkbox only checkable after checking another one before)
8. Custom email template
9. Translatable
10. Good documentation
11. Active development

Right now Solspace's Freeform looks most promising and I already know their calendar plugin. However, Sprout Forms also looks quite capable.

Does anyone of you has experience with one of these plugins or can recommend another plugin that meets all or most of the criteria?

Thank you so much for your help!

I'm currently using amforms from a&m impact on a couple of sites. However, it looks like this plugin won't get a craftcms version 3 update. In addition, my requirements for a form plugin have expanded considerably since my clients want more advanced functionality. Therefore, I am now searching for a good alternative.

My requirements are as follows:

1. It should be possible to prepopulate fields with existing data
2. Duplicating forms should be possible
3. Templating completely customizable
4. Ability to dynamically add more rows of fields (like in a reservation for a hotel where you can add more rooms or persons)
5. Validation for at least the basic field types
6. File uploads should be possible
7. Custom conditions for custom fields (like a checkbox only checkable after checking another one before)
8. Custom email template
9. Translatable
10. Good documentation
11. Active development

Right now Solspace's Freeform looks most promising and I already know their calendar plugin. However, Sprout Forms also looks quite capable.

Does anyone of you has experience with one of these plugins or can recommend another plugin that meets all or most of the criteria?

Thank you so much for your help!