Looking for a solution to manage my contracts and subscriptions

Hello all! 

I'm new to this forum, and I'm hoping that the community is able to lend a hand. I'm not quite sure if I'm over complicating things but I'm looking for a solution to manage my contracts and subscriptions. Especially for reminding me about contracts that are about to renew and to get an overview of contracts I have and what they do. Additionally, it would be great to add the pdf of the contract.  

I guess the most common way is to split the information. Reminders in the calendar, excel sheet to list all contracts and subscriptions with side notes and manually searching for the contract pdf. But is there no combined service for all of this?  

Or maybe someone has a completely different way like [contract management software] for solving this.  

I'm open for anything and thank in advance!