CASE Tools

Case tools (Computer-Aided Software Engineering tools) are software applications that assist in the software development process. They provide a range of features and functions that can help developers and project managers to design, implement, test, and maintain software systems.

Some examples of CASE tools include:

1. Requirements Management Tools: These tools help in capturing, analyzing, and managing the requirements of a software system. They can be used to document the requirements, track changes, and generate reports.

2. UML Tools: Unified Modeling Language (UML) tools are used to create diagrams and models of software systems. They can be used to create class diagrams, sequence diagrams, and activity diagrams, among others.

3. Design Tools: These tools help in creating the detailed design of a software system. They can be used to create flowcharts, pseudocode, and other design documents.

4. Code Generation Tools: These tools generate code from the design of a software system. They can be used to generate code in different programming languages and can also be used to generate code for different platforms.

5. Debugging Tools: These tools help in identifying and correcting errors in the software. They can be used to trace the execution of the code, to set breakpoints, and to view the values of variables.

6. Version Control Systems: These tools are used to manage the changes in the source code of a software system. They can be used to track the changes, to revert to previous versions, and to collaborate with other developers.

7. Testing Tools: These tools help in testing the software. They can be used to create test cases, to execute the tests, and to generate test reports.

CASE tools are widely used in software development to improve efficiency and reduce errors. They can be used for different types of software development methodologies like Waterfall, Agile, etc.

Requirements Management Tools

There are several free requirements management tools available, here are a few examples:

IBM Rational DOORS: A tool specifically designed for requirements management, it provides a centralized repository for managing requirements, traceability, and collaboration.

XMind: A popular mind mapping tool that can be used to create and organize requirements. It allows users to create diagrams, mind maps, and flowcharts to represent requirements.
ReqView
LibreOffice: A free office suite that includes a number of tools, such as a word processor, spreadsheet, and presentation software that can be used to create and manage requirements documents.

Google Docs: A free web-based word processing tool that can be used to create and share requirements documents. It allows for real-time collaboration and versioning.

OrangeScrum: A free and open-source web-based project management tool that includes a requirements management module. It allows users to create and manage user stories, track progress, and generate reports.

JIRA: Originally designed for software development teams, JIRA is now popular with teams across industries. It's a powerful tool that offers a wide range of features such as agile boards, customizable workflows, and reporting. It also has a free version for small teams.

Axosoft: a free requirement management tool that can be used to create and manage user stories, track progress, and generate reports. It also includes a Gantt chart and Kanban boards to visualize the progress of the project.

These are just a few examples of the many free requirements management tools available. It's important to evaluate the different options and choose the one that best fits your team's needs and development methodology.