diff --git a/EcosystemResources.md b/EcosystemResources.md
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@@ -59,6 +59,7 @@ Many thanks to the 20+ contributors including [@corbpage](https://twitter.com/co
 * [Scout](https://scout.cool/) - A live data feed of the activities and event logs of your smart contracts on Ethereum
 * [ethq](https://ethq.app) - The [dfuse](https://dfuse.io) powered, most detailed, block explorer built for developers
 * [Ethernal](https://www.tryethernal.com) - Ethereum block explorer for private chain. Browse transactions, decode function calls, event data or contract variables values on your locally running chain.
+* [Otterscan](https://github.com/wmitsuda/otterscan) - A blazingly fast, local, Ethereum block explorer built on top of Erigon
 
 ### Gas price calculators and tools
 * [EthGasStation](https://ethgasstation.info/) - Website for estimating tx prices vs times