Usefool tools for software developing

Databases

Supabase - The Open Source Firebase Alternative. Create a backend in less than 2 minutes. Start your project with a Postgres Database, Authentication, instant APIs, Realtime subscriptions and Storage.

Internal Tools Builder

Retool - Build internal tools, remarkably fast
ToolJet - Easiest way of building internal tools

Customer Feedback

Frill - A better way to collect customer feedback. Capture, organize, and announce product feedback in one place.

Mockups

previewed.app - Create Awesome Mockups for App Storces, Blogs, Socia Media ...
app-mockup.com - AppMockUp Studio is the online design tool trusted by mobile developers to create the most compelling screenshots for the App Store & Play Store

Colors

palettemaker.com
color-scheme-generator Generates Brand, CTA, Info, Warning, Success & Danger color
maketintsandshades.com Tint & Shade Generator