topics, influencers, sentiment and trends are provided, as well as periodical alerts and reports. The interface offers the possibility to manually edit and correct the results.

Following the same concept of Websays, **Keyhole[^9]** is a monitoring and analytics tool that provides trends, insights, and analysis (including sentiment) of hashtags, keywords, or accounts on Twitter and Instagram. It reports supporting data processing in a number of languages, but no details are given on the technology. User can also track web mentions, but two separate monitoring processes must be setup.

**Lynguo[^10]** is also in the same group of Websays and Keyhole. It claims to provide support in 24 languages, although it reports full processing chain for Spanish and English[^11]. NLP is done by means of “a range of linguistic tools to cover and combine in real time the different lexical, morphological and semantic processing layers, with machine learning and deep learning models, and software architectures”[^12]. SA includes lexicons, customizable by the user. Monitoring is configured specifying keywords and users, allowing for negative ones as well. Lynguo is also able to geolocate comments.

**Ubermetrics[^13]** is one of the few platforms that monitors multimedia sources including Youtube and Vimeo, but also TV and Radio 