Based on our record, Sketchize seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I used to get custom ones made at trulymine.ink, which were great and they are super customizable. I think this from your image is dotssy(?) which is not too bad either, but the same as the other one it's kinda pricey for what in the end is a notebook for doodling and throwing around ideas. Nowadays I just used a nice leuchtturm notebook with some sketchize.com templates stapled/taped in that I don't feel too bad... Source: about 3 years ago
Mediamodifier - Create beautiful designs and product mockups in seconds.
draw.io - Online diagramming application
uiprint - Printable templates of mockup, wireframes and sketchpads
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
Mockuper - Instant Mockup Generator
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.