1. Java 2. Python 3. Solidity 4. PHP 5. C++ 6. JavaScript
7. Go 8. C# 9. Ruby 10. SQL 11. Rholang 12. Simplicity 13. Rust 14. Erlang 15. CX 16. Elm
The cost incurred to develop a blockchain app depends upon several factors, such as the size of the app, app type, the app’s complexity level, hourly rate of the block chain developer, and the app platform.