# LANGUAGES
- Java, Javascript, Python, C# (.NET), PHP, Go (Golang), Ruby.
# FRAMEWORKS
- Express.js (Node.js), ASP.NET Core, Django (Python), Spring Boot (Java), Laravel (PHP).
# DATABASES
- Relational: MySQL, PostgreSQL, Oracle DB, Microsoft SQL Server.
- NoSQL: MongoDB, Cassandra, DynamoDB, Couchbase.
- Graph Database: Neo4j, Amazon Neptune.
# SERVER MANAGEMENT
- Docker, Kubernetes, NGINX/Apache.
# FRONTEND
- React.js, Angular, Bootstrap, Vue.js, Svelte, Tailwind.
# MOBILE
- React Native, Flutter, Ionic.
# FULL STACK
- MEAN Stack, MERN Stack, LAMP Stack, JAMstack, Django + React
# APIs and Integration
- GraphQL: API query language.
- RESTful APIs: Standardized APIs for web apps.