What is DropMock?
DropMock : Online Mockup Scene Editor : Easy to use, cloud-based; Mockup Scene design suite for videos and images. Affordable and packed full of features.
Comments and Reviews
Said about DropMock as an alternative
Aside from an amazing variety of mockups for both images and videos, DropMock also has a Scene Creator. The platform also has a very accommodating community in Facebook which I find to be quite helpful.
DropMock also offers both video and image mockups but at a lower rate than Placeit. The platform has a diverse collection of templates and even has a scene creator!