Front-end (Client-Side) Development:

• Languages: HTML, CSS, JavaScript
• Frameworks and Libraries: React, Angular, Vue.js
• Tools and Techniques: Responsive Design, AJAX
• Preprocessors: SASS, LESS
• Package Managers: npm, yarn

Back-end (Server-Side) Development:

• Languages: Node.js, Python, Java, Ruby, PHP, .NET
• Frameworks: Express.js (for Node.js), Django (for Python), Ruby on Rails (for Ruby), Spring Boot (for Java), Laravel (for PHP)
• Databases: SQL (like MySQL, PostgreSQL) and NoSQL (like MongoDB, Cassandra)
• ORMs: Sequelize, Mongoose, Hibernate
• Middleware: Tools that process incoming requests before hitting the application, such as body-parser or cookie-parser.

Version Control/Git:

• Tools like Git and platforms like GitHub, GitLab, and Bitbucket allow developers to track changes, collaborate with others, and manage source code.

Databases:

• Relational Databases: MySQL, PostgreSQL, SQL Server
• NoSQL Databases: MongoDB, CouchDB, DynamoDB

DevOps:

• Continuous Integration & Continuous Deployment (CI/CD): Jenkins, Travis CI, CircleCI
• Containerization: Docker
• Container Orchestration: Kubernetes
• Cloud Providers: AWS, Google Cloud Platform, Azure

Web Servers:

• Apache, Nginx, IIS

APIs:

• RESTful services, GraphQL
• Authentication: OAuth, JWT

Web Sockets: For real-time applications.

Testing:

• Unit Testing, Integration Testing, Functional Testing
• Frameworks: Jest, Mocha, Jasmine

Other Tools & Techniques:

• Build tools: Webpack, Gulp, Grunt
• Environment tools: .env, dotenv
• Performance optimization
• Web security best practices