## 1 Introduction  
The construction industry is a knowledge-based industry [1]. Therefore, effective knowledge management (KM) is believed to be one of the performance enhancers for organizations wanting to remain successful in the highly competitive global construction industry [2]. KM is even more important for small-to-medium enterprises (SMEs), as knowledge is a key resource for them to survive, grow, and remain competitive in turbulent economic times [3]. This has a particular relevance for the Chilean construction sector because 98% of these construction companies are SMEs and they represent 81% of the workplaces in this sector [4]. KM recognizes knowledge as one of the most important assets of an organization, moving away from the traditional economic vision, which recognizes knowledge as something external to the company and without connection to the economic process [5]. Knowledge is seen as information that is found in the mind of an individual, related to facts, procedures, concepts, judgments and ideas; in turn, KM refers to identifying and leveraging collective knowledge in an organization to help the company compete [6]. The KM process can be divided into two main macro-processes: knowledge management adoption, and knowledge management development [7]. In this article, we focus mainly in the second macro-process, which includes the phases of creation, storage, transfer, sharing, and application of knowledge [7]. To conduct KM in SMEs, an appropriate environment is needed, where the employees manage their knowledge in their day-to-day activities and do so without it becoming an excessive workload [8]. In order to achieve this in SMEs, Information and Communication Technology (ICT) must play an enabling and even a key role in the KM process [8; 9; 10], but most SMEs construction companies lack the budget for investment in ICT [11] or have difficulties adopting ICT [12]. It is difficult for construction practitioners to adopt innovative ICT, even when those technologies have been proven to be beneficial, as technology-centered designs force users to adapt to new technology [13]. Thus, in order to consider ICT tools for KM in SMEs, they need to be inexpensive and user-friendly [8], which can be accomplished with a methodology that emphasizes fast iteration and user insight, such as lean development methodology [14]. The literature has examined programs to conduct KM on Building Information Modeling (BIM)-based platforms [15; 16; 17], since they are widely used in several countries. Nevertheless, the usage of BIM for the KM process in SMEs must cope with significant entry barriers, such as high initial investment and staff training [18]. Moreover, BIM is at a very early stage of adoption in the Chilean construction industry, meaning that these barriers will not be surpassed in the medium term [4; 19]. Thus, there is a need to develop alternative tools that do not depend on BIM to conduct KM in construction SMEs. Platforms based on Cloud Computing (CC) and/or Mobile Computing (MC) emerge as a possible solution to knowledge management in construction companies. The usage of these technologies offers several advantages to the working environment of SMEs construction companies [20; 21]. These technologies can also be integrated in what is known as Mobile Cloud Computing (MCC). This integration results in a synergy that provides the advantages of both CC and MC, where CC mitigates some of MC most important limitations [22; 23]. CC and MC have been separately proposed in the literature to address issues within the construction industry, covering a wide span of applications from general-use software to very task-specific applications [21; 24; 25; 26; 27; 28]. Some MCC systems have also been proposed to improve supply chain management [29; 30]. Moreover, different BIM applications such as BIM360 [31], BIMx [32], PlanGrid [33] and A360 [34] are mobile and/or cloud-based. Also, systems to manage knowledge such as Slack [35], XWiki [36], or AnswerHub [37] are available in the market.