Electronic Collaboration Logbook

<!--HTML-->In HEP, scientific research is performed by large collaborations of organizations and individuals. Log book of a scientific collaboration is important part of the collaboration record. Often, it contains experimental data. At FNAL, we developed an Electronic Collaboration Logbook (ECL) application which is used by about 20 different collaborations, experiments and groups at FNAL. ECL is the latest iteration of the project formerly known as Control Room Logbook (CRL). We have been working on mobile (IOS and Android) clients for ECL. We will present history, current status and future plans of the project, as well as design, implementation and support solutions made by the project.