oracle cloud's free tier is equivalent to DO's $5 droplets (they also have a second free tier offering with ARM cpu's, with up to 4 vcpu/24gb memory for free(!), but it's high-demand and difficult to get a slot)
I'm afraid to touch anything Oracle for fear that a fleet of SUVs filled with teams of software auditors & a mobile law firm will show up on my doorstep with a $5M invoice and a lein on my house.