The current study aims to investigate the literature on the use of web tools in language teaching with an in-depth analysis by obtaining the opinions of the trainees of the certificate program in different periods. Literature on the use of web tools was analyzed according to certain criteria and summarized to gain a broad perspective. The research was carried out with 45 trainees within the scope of the case study. The online certificate program, in which the study is conducted, is a certificate program that is organized periodically within the scope of Teaching Turkish as a Foreign Language, and its target is teachers or pre-service teachers. A different subject is covered in each course in the certificate program. One of the topics covered in "The Use of Web Tools in Language Teaching". In the context of this subject, theoretical and practical training is given on the use of web tools in online language teaching. Within the scope of this course, the learners were given training on the use of web tools in language teaching, and applications were made. The same training was given for each group and data collection was carried out immediately after the training. The data was obtained online from the participants in three different certificate programs held in different periods. The data were analyzed with NVivo 12 software and content analysis was performed. The results of the research were interpreted in line with the working groups and suggestions were made.