Open Source Application is a concept of software development rather than a specific type of application. Information sharing is encouraged through open source software, which is seen as a strong and advantageous idea. The purpose of the study was to determine the impact of open source applications usage in teaching and learning of Computing Courses in the Institution of Higher Learning as well investigating the kinds of open source software’s and accessibility that potential computing educators in the area under study are familiar with. The importance of this study, which examined Zetech University prospective computing teachers' use of open-source software in higher education, will give the university's administration and various departments inside knowledge of how familiar and knowledgeable these individuals are with open source software. By doing this, the authority will be able to identify their weaknesses and opportunities for improvement, such as Universities should replace proprietary software with open-source software to reap future benefits like license renewal and file upgrades. In the investigation, a mixed method approach was used. 180 staff members and students were purposefully chosen at random for the study at Zetech University, and a sample of 118 was taken. In the quantitative approach, the descriptive statistics were employed to display the distribution of scores using a few indices. Based on the findings 90.7% were familiar with open source software’s while 9.3% were not familiar. 98.3% suggested that it was essential to use open source applications in teaching computing courses while 1.7% rejected the narrative. 71.2 % of the respondents were familiar with universities using open source software’s in their Curriculums while 28% were not familiar with any. 46.6% of the respondents ascertained that the university has provided an environment to access open source applications,31.4% disagreed, while 14.4% were neutral. Universities should switch to open source software instead of proprietary software to save money on license renewal and upgrade fees, a position that was strongly supported by 38.1%, agreed by 40.7%, was neutral by 12.7%, and disagreed by 5.1% and 3.4%. The paradigm for education must change to Education 4.0 in order to give innovatively productive education. Faculty members and educators can employ a range of cutting-edge tools and technology to do this. These technologies can be used to track students' participation and engagement in the program both on and off campus with the help of IoT and ontology. Virtual learning environments can also be utilized in conjunction with different blended learning environments to accommodate a range of learner types. Practitioners must be aware of the potential negative effects of using open source software while developing a product in order to be ready for them, anticipate them, and take the required steps to overcome them. The institutions ought to be linked to websites which features a list of open source programs associated with many categories, including security, cloud computing, small enterprises, big data, games, etc. Aspiring computer science teachers' knowledge of open source programs will be improved as a result. This will enhance the open source software understanding of aspiring computer science teachers.