The software process improvement has gained a lot of space in recent years; the Software Engineering community has developed models that improve the software process. Knowing the reality of software development companies is fundamental for the application of some process improvement model. In the case of SMEs, due to lack of resources, this improvement may be unattainable. In this document, we present an analysis of the processes and activities that are considered by the CMMI process improvement models, Competisoft and ISO/IEC 29110. The aspects that must be fulfilled are established within the different activities that correspond to two processes: planning/management of the project and development/implementation of software; the instrument was designed and 10 SME software developers were evaluated. The results obtained indicate that the companies surveyed do not comply with all the aspects required to complete the initial level of a process improvement model.