Added LimeSurvey (#234)

Author: c-schmitz

README.md

@@ -219,6 +219,7 @@ Scheduling|[Cal.com](https://cal.com/)|Scheduling infrastructure, alternative to
 Session replay software|[OpenReplay](https://openreplay.com/)|Session replay stack for developers|<a href=https://github.com/openreplay/openreplay><img src="https://img.shields.io/github/stars/openreplay/openreplay?style=social" width=150/></a>|[LogRocket](https://logrocket.com/), [FullStory](https://www.fullstory.com/)
 Social Media|[Postiz](https://postiz.com)|Self-hosted social media scheduling tool|<a href=https://github.com/gitroomhq/postiz-app><img src="https://img.shields.io/github/stars/gitroomhq/postiz-app?style=social" width=150/></a>|[Buffer](https://buffer.com/), [Hootsuite](https://hootsuite.com/)
 Streaming|[Glimesh](https://glimesh.tv/)|Live streaming platform|<a href=https://github.com/glimesh/glimesh.tv><img src="https://img.shields.io/github/stars/glimesh/glimesh.tv?style=social" width=150/></a>|[Twitch](https://www.twitch.tv/)
+Surveys|[LimeSurvey](https://www.limesurvey.org/)|Online survey platform|<a href=https://github.com/LimeSurvey/LimeSurvey><img src="https://img.shields.io/github/stars/LimeSurvey/LimeSurvey?style=social" width=150/></a>|[SurveyMonkey](https://www.surveymonkey.com/), [Qualtrics](https://www.qualtrics.com/)
 Timeseries database|[CrateDB](https://crate.io/)|Distributed SQL database for real-time analytics of time series data|<a href="https://github.com/crate/crate"><img src="https://img.shields.io/github/stars/crate/crate?style=social" width=150/></a>|[Kdb+](https://kx.com/developers/)
 Timeseries database|[InfluxDB](https://www.influxdata.com/)|Database designed to process time series data|<a href=https://github.com/influxdata/influxdb><img src="https://img.shields.io/github/stars/influxdata/influxdb?style=social" width=150/></a>|[Kdb+](https://kx.com/developers/)
 Timeseries database|[QuestDB](https://questdb.io/)|Database designed to process time series data|<a href=https://github.com/questdb/questdb><img src="https://img.shields.io/github/stars/questdb/questdb?style=social" width=150/></a>|[Kdb+](https://kx.com/developers/)