The specific technologies and programming languages they specialize in may vary from company to company. Some common technologies and programming languages that software development companies often specialize in include:
1. Programming Languages: Java, Python, C#, JavaScript, Ruby, PHP, Swift, Kotlin, etc.
2. Web Technologies: HTML, CSS, JavaScript, Angular, React, Vue.js, Node.js, ASP.NET, Django, Flask, etc.
3. Mobile App Development: iOS (Swift, Objective-C), Android (Java, Kotlin), React Native, Flutter, Xamarin, etc.
4. Database Technologies: MySQL, PostgreSQL, MongoDB, Oracle, SQL Server, Firebase, etc.
5. Cloud Technologies: Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), etc.
6. Frameworks and Libraries: .NET, Spring, Django, Laravel, Express.js, Flask, Ruby on Rails, Vue.js, React.js, AngularJS, etc.
7. DevOps and Deployment: Docker, Kubernetes, Jenkins, Git, CI/CD pipelines, AWS Elastic Beanstalk, Heroku, etc.
8. Machine Learning and Data Science: Python (NumPy, Pandas, TensorFlow, scikit-learn), R, PyTorch, Keras, etc.
9. IoT (Internet of Things): Arduino, Raspberry Pi, MQTT, Node-RED, AWS IoT, etc.
Remember, the specific technologies and programming languages a software development service provider specializes in will depend on their team's expertise and the requirements of the projects they have worked on in the past.