If you check the entire Wordpress plugins directory, you will find more than 54,000 plugins which you can choose from. Furthermore, a lot of new plugins are added daily. In general, most websites built on the wordpress platform can safely have anywhere from 20-30 plug-ins installed at any point in time. In case you are using Wordpress with access to all of its advanced features, you can also choose to have more than 50 plug-ins. However, make sure to limit the number of plug-ins if your website is hosted on any shared platform. In that case it's better to keep the number of plugins below 10.