> For the complete documentation index, see [llms.txt](https://zchains.gitbook.io/zchains-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zchains.gitbook.io/zchains-whitepaper/architecture/modules/other-modules.md).

# Other modules

### Crypto

The **Crypto** module contains crypto utility functions.

### Chain

The **Chain** module contains chain parameters (active forks, consensus engine, etc.)

* **chains** - Predefined chain configurations (mainnet, goerli, ibft)

### Helper

The **Helper** module contains helper packages.

* **dao** - Dao utils
* **enode** - Enode encoding/decoding function
* **hex** - Hex encoding/decoding functions
* **ipc** - IPC connection functions
* **keccak** - Keccak functions
* **rlputil** - Rlp encoding/decoding helper function

### Command

The **Command** module contains interfaces for CLI commands.