Virtuino Modbus - Virtuino Modbus is an app that enables you to monitor or control the automation system by using IP protocol or Modbus TCI.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Coil32 - Coil32 is one of the best apps featured with an inductance coil calculator to calculate chokes, flat square coils, and single/multi-layer air-core inductors on printed circuit boards.
F5 Advanced Firewall Manager - Stop even the most massive and complex DDoS attacks with BIG-IP Advanced Firewall Manager: advanced data center protection against layer 3–4 threats.
ElectroMaster App - ElectroMaster App is an Electro-technical and Electrical tool that helps electrical/electronic engineering students to solve complex LC circuits quickly and effectively.
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.