Based on our record, Platforma 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.
There are some decent starters in the community (including some really great OS-native resources), but another option is purchase something like Platforma if you're looking to make interactive wireframes - https://platforma.ws/. Source: about 2 years ago
Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
Method Wireframe Kit - Find your method of being incredibly fast in prototyping.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.