Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Hacker Dig - Digging ideas from Hacker News
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.
BackerTracker - Track crowdfunding projects and see how much they'll raise
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
Doczilla - Effortlessly create stunning PDFs and screenshots. Seamlessly store them in your own AWS or Google Cloud Storage bucket, putting the control and creativity right at your fingertips.