Salience 6

Lexalytics state of the art natural language processing engine on your own hardware.

  • Less than 5 microseconds to process a tweet
  • Billions of documents processed daily
  • Over 40 person-years of development
  • More features and customizability than any other engine
  • Integrates in days

Lexalytics Salience Engine powers many of the top 10 social monitoring and social marketing providers, several of the top customer experience management companies, top survey analysis companies, business intelligence software providers, and more. If you need a high-performance text analytics engine to integrate with your application or put behind your firewall, you've found the one you need.

Extreme Focus on Text

Over our 11 years in business, we've never deviated from our goal of providing the absolute best text analytics engine possible. We support 16 languages, a Twitter-mode for dealing with social slang and emoji, machine learning and grammar based natural language processing, sentiment, categorization, entity extraction, intention analysis, and topic extraction. Or use our industry-best low level part of speech, sentence and lexical chunk output to feed your own extraction algorithms.


No company offers more customizability. Tweak every step of the process, from tokenization to sentiment phrases. Add your product codes, train our categorization system to tag your content for your industry. This level of customizability is the perfect match with our transparency – you can see what's happening and immediately change the behavior. Or relax and enjoy industry leading out of the box extraction without lifting a finger except to say "go".

Lorenzo Alberton from Datasift
It took 2 engineers only 4 days to integrate Lexalytics' Salience Engine into our content processing pipeline.
Lorenzo Alberton, CTO DataSift


We are a clear plexiglass box and you can see all the gears. Highlight sentiment phrases with scores and entities with pronoun references. See the part-of-speech tags, and the phrases. No more wondering how a document wound up in a category. You can see our thought process and explain to your users exactly what is going on.

Speed and Scale

Built from the ground up with performance in mind. Shared-nothing architecture means limitless scalability. Small memory footprint. Use Java, PHP, Python, .NET/C# bindings for higher level ease or the native C/C++ interface for maximum speed.

Salience is available for Microsoft Windows and Linux servers

  • 64bit operating system; Windows - Windows 7 or above; Linux distribution with gcc 4.7.3; glibc 2.3.4
  • Memory: at least 4GB, more needed if running multiple concurrent Salience sessions
  • Recommended development environments: Java 1.6 or 1.7, python 2.7, Visual Studio 2015

Or call us at 1-800-377-8036