ResearchGate contents only papers that researchers have voluntarily put into the base, as you must register to get a researchgate account.
So some publications may not be visible in RG.
On the contrary Google Scholar can find everything that is visible on the web from anybody. So Google Schoalr usually get more occurences for each individual than ResearchGate, even if some material put on Researchgate might be not visible on the weg for Google Scholar.
So both are interesting. Google Scholar helps increase the visibility of all our productions that are visible on the web, and not only the papers in indexed journals or some proceedings -as in SCOPUS or WOK/ISI-, but might miss some of our productions which are not on the web. ResearchGate can give visibility to some of our productions which is difficult to get on the web as reports, technical notes, maps, posters, and so on...
Here is joined a short note about this which can help to compare the results of ISI, SCOPUS, Google Scholar and ResearchGate.
From my point of view, ResearchGate (RG) is the best attractive academic social networking portal for the scientific community. In practice, RG is one of the biggest social media networks for the scientific community. It is a platform and a gateway for sharing information and experiences between scientists, experts, researchers, and practitioners. Hence, I am grateful to the network opportunities offered by RG for having this access to a broad range of researchers, papers, projects, questions, and discussion threads that otherwise I can't find. In a nutshell, ResearchGate (RG) is a kind of social media with a strong academics/research emphasis.
But, let me point to the following issue. Recommend, Follow, Download an article is just social interaction. Despite it helps to increase the RG scores, it reflects neither the work quality nor the researcher position. This score depends on the institution where you work; this score in the institution where I work hasn't any remote feedback.
I know that the more you participate in various research activities, the more your research interest increases. Nevertheless, as we are researchers, the RG total research of interest shouldn't be our main goal in itself. We should do our job honestly, such as writing valuable articles, participate in the useful discussions that we are really interested in. If we don't bother with this metric, we will see that it will increase.
If we make this metric our goal, it will astray us and then we will jump over some fences to increase our metrics without real internal improvement.
The main benefit of researchgate is getting to know the other scholars and making a scientific network. In return, the google scholar is a profile for indexing and the domain of influence of the researches.
Google scholar is also the best scientific library today, even Researchgate is less well informed, even if a small number of documents people put on RG may be not found by RG. But now Google scholar also put results from RG which are available elsewhere, which allows also finding them
ResearchGate is a good platform to share your research items, interact with like-minded people, get collaborations, ask relevant questions and get answers from experts at no cost, etc.
ResearchGate finds less citations than Google Scholar but more than both Web of Science and Scopus. Nevertheless, preprint sharing in ResearchGate is substantial enough for authors to take seriously. https://link.springer.com/article/10.1007/s11192-017-2400-4
Prof. Neeran Jasim: Registering in the Research Gate (RG) and Googel Scholar portals is a mandatory request in my university and all the other Jordanian universities. For any rank promotion, as an instance, my university asks the candidate to attach a report that contains his/her RG Score and the Total Research Interest scores.
Goggle scholar is just a profile for researchers to showcase their publications. Although with the google scholar profile you can check who is citing your articles, graph citations over time and citation metrics. With research gate you learn a lot from other researchers.
Research gate help promoting the work of each researcher among the scientific community, but the real purpose of research gate platform is to to encourage the interaction between researchers regardless of their discipline or their areas of research to make them more closer and to create innovative collaborations.
To me I see RG as a better opportunity to interact and subsequently collaborate with other scholars. Google scholar on the otherhand provides an avenue for scholars to display their profile and the aggregate impacts they've made/created in the scientific community.
I believe the two platforms complement each other.