In 2023, popular software tech stacks include:
1. MEAN Stack: MongoDB, Express.js, AngularJS, Node.js; efficient for mobile/web app development.
2. MERN Stack: Replaces Angular in MEAN with React; offers strong libraries and extensive documentation for full-stack development.
3. MEVN Stack: Substitutes Angular.js in MEAN with Vue.js; lightweight, easy to use, great for web apps.
4. Ruby on Rails: Favored for quick development of diverse applications, especially with complex business logic on a budget.
5. Flutter: Uses Dart for cross-platform mobile app development, overcoming some limitations of stacks like LAMP or MERN.
6. LAMP Stack: Linux, Apache, MySQL, PHP combo; known for performance and flexibility.