On 12 September 2023, I updated below overview from LimeSurvey features based on this page to be used for easy reference. In my projects I use the Community Edition installed on Ubuntu Server LTS.
Question types
Matrix
Matrix (5 point selection)
Matrix (10 point selection)
Matrix (yes / no / uncertain)
Matrix (Increase/ equal / decrease)
Matrix (by column)
Matrix (Dual)
Matrix (Numbers)
Matrix (Text)
Date
Gender
Numerical input
Multiple numerical input
Slider control
Ranking
Text module
Yes / No
Language change
Multiple selection
Multiple selection with commentary
List selection box
Option fields list
List of option fields (5 point selection)
List with comment field
Multiple short texts
Free text (short/medium/long)
Data-Upload
Equation
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Language
Panel Integration
Creation of questions
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-
Own JavaScript
Pictures and Videos (HTML5)
Reusable questionnaire labels
Import / export of questions and surveys
Randomization of questions and groups of questions
Survey logic
Survey management
Open and closed surveys
Individual & mass mailing of invitations and reminders
Customization of email templates
Use of different mail servers
Automatic bounce handling
Printable surveys
Start and end time for a survey
Data security & anonymization
Anonymous surveys
GDPR compliance
SEA/SEO
Participants
Survey design
Anticipated data & Reporting
Timekeeping for surveys
Data entry in the backend
Quick statistics with graphical evaluation and export
Dataexport to SPSS, R, Stata, CSV, Excel & PDF
Export to archive
Public statistics
Accessibility
Developer
RemoteControl
API via XML-RPC / JSON-RPC