Does the job!
SIREN.io - Siren is an investigative intelligence platform.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
DataWalk - DataWalk is a software platform to connect numerous large data sets, both external and internal, into a single repository for fast visual analysis.
Email Verifier - Email verifier app lets you verify email.
Sentinel Visualizer - Link Analysis, Data Visualization, Geospatial Mapping, and Social Network Analysis (SNA) with Sentinel Visualizer
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI