diff --git a/README.md b/README.md
index c5c3ae941..3a84ec88f 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,19 @@ It currently is being designed for testnet-L, a test network where all* txids ar
 
 It is not yet functional, but we hope to have a proof of concept on testnet-L soon.
 
+
+### cmd / lncli
+A command line to query and control a running lnd.  Similar to bitcoin-cli
+
+### elkrem
+Library to send and receive a tree structure of hashes which can be sequentially revealed.  If you want to send N secrets, you only need to send N secrets (no penalty there) but the receiver only needs to store log2(N) hashes, and can quickly compute any previous secret from those.
+
+This is useful for the hashed secrets in LN payment channels.
+
+### lndc
+Library for authenticated encrypted communication between LN nodes.  It uses chacha20_poly1305 for the symmetric cipher, and the secp256k1 curve used in bitcoin for public keys.  No signing is used, only two ECDH calculations: first with ephemeral keypairs and second with persistent identifying public keys.
+
+### uspv
+Wallet library to connect to bitcoin nodes and build a local SPV and wallet transaction state.
+
+