diff --git a/content/concepts/tools.md b/content/concepts/tools.md
index 3c17be70..6c68e97d 100644
--- a/content/concepts/tools.md
+++ b/content/concepts/tools.md
@@ -5,11 +5,9 @@ description: Some tools that can be useful when working with Ocean Protocol.
 
 ## Plecos
 
-Plecos is a Python tool to check metadata (a JSON file) to see if it conforms to the [OEP-8 schema](https://github.com/oceanprotocol/OEPs/tree/master/8). It wraps the [jsonschema](https://github.com/Julian/jsonschema) validator. It can be found in [the Plecos repository on GitHub](https://github.com/oceanprotocol/plecos) and as [a Python package in PyPI](https://pypi.org/project/plecos/).
+Plecos is a Python tool to check metadata (a JSON file) to see if it conforms to the [OEP-8 schema](https://github.com/oceanprotocol/OEPs/tree/master/8). It wraps the [jsonschema](https://github.com/Julian/jsonschema) validator. Aquarius uses Plecos for checking metadata and other Ocean Protocol software will probably use it in the future.
 
-<repo name="Plecos"></repo>
-
-Note: Aquarius uses Plecos for checking metadata and other Ocean Protocol software will probably use it in the future.
+<repo name="plecos"></repo>
 
 ## Faucet Server
 
@@ -19,6 +17,15 @@ The [Ocean Protocol Faucet Server](https://github.com/oceanprotocol/faucet) is a
 
 ## Submarine Blockchain Explorer
 
-Submarine is based on [BlockScout](https://github.com/poanetwork/blockscout) (by [POA](https://poa.network/)), an open source blockchain explorer for Ethereum networks.
-
+Submarine is based on [BlockScout](https://github.com/poanetwork/blockscout) (by [POA](https://poa.network/)), an open source blockchain explorer for EVM-based blockchain networks.
 There is an [Ocean Protocol fork of BlockScout](https://github.com/oceanprotocol/blockscout). An instance is deployed in the Nile Testnet at [https://submarine.dev-ocean.com/](https://submarine.dev-ocean.com/).
+
+<repo name="blockscout"></repo>
+
+## Command-Line Interfaces
+
+There are a few Ocean Protocol command-line interfaces (CLIs). All of them were under development at the time of writing, so you may have issues with using them.
+
+- [tuna](https://github.com/oceanprotocol/tuna) can help you use squid-py, squid-js or squid-java from the command line
+- [ocean-cli](https://github.com/bigchaindb-gmbh/ocean-cli) was built using squid-java
+- [ocean-cli-py](https://github.com/bigchaindb-gmbh/ocean-cli-py) was built using squid-py
diff --git a/data/repositories.yml b/data/repositories.yml
index 3df65e65..755909b2 100644
--- a/data/repositories.yml
+++ b/data/repositories.yml
@@ -31,7 +31,10 @@
       links:
         - name: API reference
           url: https://www.javadoc.io/doc/com.oceanprotocol/squid/
-    - name: Plecos
+    - name: plecos
+    - name: faucet
+    - name: blockscout
+    - name: tuna
 
 - group: OceanDB
   items: