diff --git a/README.md b/README.md
index c06fdd7..6e8a84b 100644
--- a/README.md
+++ b/README.md
@@ -92,3 +92,5 @@
 * [Eth converter](https://eth-converter.com/)
 * [JSON formatter](https://jsonformatter.curiousconcept.com/)
 * [Craft requests from curl commands](https://reqbin.com/)
+* [Smart contract fuzzer](https://github.com/crytic/echidna)
+* [Smart contract code analyzer](https://github.com/crytic/slither )