In French the word I'd use is mes connaissances. But this word also (and mainly) means the things I know, and then the traduction I find is: my knowledges.
Is this double meaning exists in English and what should I say to talk about people I know and who know me without being my friends?
Edit (an example of context):
This software is very popular, if you have any problem with it just ask to your connaissances, I think that somebody could help you.