The Two most effective IOT testing tools are 

1.Shodan

Shodan is an IOT testing tool which we can use to discover which of our devices are connected to the Internet. It allows us to keep track of all the computers which are directly accessible from the Internet.

2.Thingful

Thingful is a search engine for the Internet of Things. It allows secure interoperability between millions of objects via the Internet. 

This IOT testing tool also controls how data is used and empowers people to make more valuable decisions.

In order to execute the wide range of IoT tests listed above in a staging environment, the use of the right automation, simulation, virtualization, and measurement tools is quite critical. The following tools are available for testing:

Device/Protocol Simulators: Devices, which are standards-compliant, can be often simulated using tools. They can be simulated in large numbers as well as configured to map the required real-life states.

Record & Play Tools: Be it devices or applications, system, and user data/actions can be recorded and replayed on simulators and apps as a means of automating the test execution.

Mobile Testing Tools: They provide automated functional mobile testing that replicates end-user experience and ensures that the application works as expected.

Security Testing Tools: They can be classified into threat modelling, static code analysis, and runtime threat inducing tools. Tools such as Micro Focus® Fortify on Demand, OWASP ZAP, VCG, and Microsoft® Threat Modelling Tool identify threats, prioritize them, and also provide recommendations on how to fix them. Acunetix® and Netsparker® are two open-source security tools that could help in unearthing vulnerabilities. 

API Testing Tools: we generally use REST APIs and Web services. Tools such as Postman, SoapUI, Progress®, Telerik®, Fiddler™, etc to test their connectivity, response, and performance. 

Virtualization Tools: They enable economic and timely execution of compatibility tests without the requirement for investment in different hardware, operating systems, browsers, databases, platform services, etc.

Automated Deployment Tools: They are used to programmatically create virtual machines either on-premise or in the cloud, rapidly commission managed services, configure, and deploy custom-built services and applications.
Tools such as Foreman, Ansible Tower®, and Katello ensure the building of staging setup so that automated and manual tests can be triggered on time in continuous build, integration, and deployment environments.

In addition to this, test case and defect management tools and proprietary tools can improve productivity, speed, and effectiveness of quality control execution.

How do you do effort estimation for an IOT Testing project?

Thoughtframeworks has an unique approach for each project before starting the IOT Testing. 

How do you cover multiple browsers & mobile devices when you have less time?

When sprint duration is a constraint we use smart test execution, so we test based on priority.

Communication between clients & QA team?

We communicate on slack or skype to clarify queries regularly if any and ensure that communication between the development team and testing team is on the same page.

How does Thoughtframeworks manage the regular test cycles? 

We send Daily status reports, Weekly status reports and have a weekly call with clients.

How do we design test cases?

Refer wireframe tools like Figma and design test cases with test-case design techniques such as equivalence partition, boundary value analysis and error guessing, we also reflect on the previous domain knowledge / experience. We conduct brainstorming sessions within the team to explore and further formulate test cases.