> For the complete documentation index, see [llms.txt](https://docs.orai.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.orai.io/developer-guides/cosmwasm-contract/cosmwasm-simulate.md).

# End-to-end CosmWasm testing with CW-simulate

[CosmWasm Simulate](https://github.com/oraichain/cw-simulate) is an open-source tool that manages contract states to simulate the effects of CosmWasm contracts on the blockchain environments on which they are hosted.

Oraichain Labs forked the repository from [Cosmology Tech](https://github.com/cosmology-tech/cw-simulate), increased its testing performance, and added a lot of additional features:

* Simulating IBC states
* Gas simulation
* Simulating address native balances.
* Simulating block creation.

For more information, please visit our [CosmWasm Simulate README](https://github.com/oraichain/cw-simulate/blob/main/README.md)