diff --git a/books/architecture/src/SUMMARY.md b/books/architecture/src/SUMMARY.md
index 74ecda6..3a8b351 100644
--- a/books/architecture/src/SUMMARY.md
+++ b/books/architecture/src/SUMMARY.md
@@ -117,8 +117,8 @@
 ---
 
 - [⚪️ Appendix](appendix/intro.md)
+    - [🟢 Crates](appendix/crates.md)
     - [🔴 Contributing](appendix/contributing.md)
-    - [🔴 Crate documentation](appendix/crate-documentation.md)
     - [🔴 Build targets](appendix/build-targets.md)
     - [🔴 Protocol book](appendix/protocol-book.md)
     - [⚪️ User book](appendix/user-book.md)
\ No newline at end of file
diff --git a/books/architecture/src/appendix/crate-documentation.md b/books/architecture/src/appendix/crate-documentation.md
deleted file mode 100644
index 0f4d96d..0000000
--- a/books/architecture/src/appendix/crate-documentation.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# Crate documentation
-```bash
-cargo doc --package $CUPRATE_CRATE
-```
\ No newline at end of file
diff --git a/books/architecture/src/appendix/crates.md b/books/architecture/src/appendix/crates.md
new file mode 100644
index 0000000..224e678
--- /dev/null
+++ b/books/architecture/src/appendix/crates.md
@@ -0,0 +1,61 @@
+# Crates
+This is an index of all of Cuprate's in-house crates it uses and maintains.
+
+They are categorized into groups.
+
+Crate documentation for each crate can be found by clicking the crate name or by visiting <https://doc.cuprate.org>. Documentation can also be built manually by running this at the root of the `cuprate` repository:
+```bash
+cargo doc --package $CRATE
+```
+For example, this will generate and open `cuprate-blockchain` documentation:
+```bash
+cargo doc --open --package cuprate-blockchain
+```
+
+## Consensus
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-consensus`](https://doc.cuprate.org/cuprate_consensus) | [`consensus/`](https://github.com/Cuprate/cuprate/tree/main/consensus) | TODO
+| [`cuprate-consensus-rules`](https://doc.cuprate.org/cuprate_consensus_rules) | [`consensus/rules/`](https://github.com/Cuprate/cuprate/tree/main/consensus-rules) | TODO
+| [`cuprate-fast-sync`](https://doc.cuprate.org/cuprate_fast_sync) | [`consensus/fast-sync/`](https://github.com/Cuprate/cuprate/tree/main/consensus/fast-sync) | Fast block synchronization
+
+## Networking
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-epee-encoding`](https://doc.cuprate.org/cuprate_epee_encoding) | [`net/epee-encoding/`](https://github.com/Cuprate/cuprate/tree/main/net/epee-encoding) | Epee (de)serialization
+| [`cuprate-fixed-bytes`](https://doc.cuprate.org/cuprate_fixed_bytes) | [`net/fixed-bytes/`](https://github.com/Cuprate/cuprate/tree/main/net/fixed-bytes) | Fixed byte containers backed by `byte::Byte`
+| [`cuprate-levin`](https://doc.cuprate.org/cuprate_levin) | [`net/levin/`](https://github.com/Cuprate/cuprate/tree/main/net/levin) | Levin bucket protocol implementation
+| [`cuprate-wire`](https://doc.cuprate.org/cuprate_wire) | [`net/wire/`](https://github.com/Cuprate/cuprate/tree/main/net/wire) | TODO
+
+## P2P
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-address-book`](https://doc.cuprate.org/cuprate_address_book) | [`p2p/address-book/`](https://github.com/Cuprate/cuprate/tree/main/p2p/address-book) | TODO
+| [`cuprate-async-buffer`](https://doc.cuprate.org/cuprate_async_buffer) | [`p2p/async-buffer/`](https://github.com/Cuprate/cuprate/tree/main/p2p/async-buffer) | A bounded SPSC, FIFO, asynchronous buffer that supports arbitrary weights for values
+| [`cuprate-dandelion-tower`](https://doc.cuprate.org/cuprate_dandelion_tower) | [`p2p/dandelion-tower/`](https://github.com/Cuprate/cuprate/tree/main/p2p/dandelion-tower) | TODO
+| [`cuprate-p2p`](https://doc.cuprate.org/cuprate_p2p) | [`p2p/p2p/`](https://github.com/Cuprate/cuprate/tree/main/p2p/p2p) | TODO
+| [`cuprate-p2p-core`](https://doc.cuprate.org/cuprate_p2p_core) | [`p2p/p2p-core/`](https://github.com/Cuprate/cuprate/tree/main/p2p/p2p-core) | TODO
+
+## Storage
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-blockchain`](https://doc.cuprate.org/cuprate_blockchain) | [`storage/blockchain/`](https://github.com/Cuprate/cuprate/tree/main/storage/blockchain) | Blockchain database built on-top of `cuprate-database` & `cuprate-database-service`
+| [`cuprate-database`](https://doc.cuprate.org/cuprate_database) | [`storage/database/`](https://github.com/Cuprate/cuprate/tree/main/storage/database) | Pure database abstraction
+| [`cuprate-database-service`](https://doc.cuprate.org/cuprate_database_service) | [`storage/database-service/`](https://github.com/Cuprate/cuprate/tree/main/storage/database-service) | `tower::Service` + thread-pool abstraction built on-top of `cuprate-database`
+| [`cuprate-txpool`](https://doc.cuprate.org/cuprate_txpool) | [`storage/txpool/`](https://github.com/Cuprate/cuprate/tree/main/storage/txpool) | Transaction pool database built on-top of `cuprate-database` & `cuprate-database-service`
+
+## RPC
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-json-rpc`](https://doc.cuprate.org/cuprate_json_rpc) | [`rpc/json-rpc/`](https://github.com/Cuprate/cuprate/tree/main/rpc/json-rpc) | JSON-RPC 2.0 implementation
+| [`cuprate-rpc-types`](https://doc.cuprate.org/cuprate_rpc_types) | [`rpc/types/`](https://github.com/Cuprate/cuprate/tree/main/rpc/types) | Monero RPC types and traits
+| [`cuprate-rpc-interface`](https://doc.cuprate.org/cuprate_rpc_interface) | [`rpc/interface/`](https://github.com/Cuprate/cuprate/tree/main/rpc/interface) | RPC interface & routing
+
+## 1-off crates
+| Crate | In-tree path | Purpose |
+|-------|--------------|---------|
+| [`cuprate-cryptonight`](https://doc.cuprate.org/cuprate_cryptonight) | [`cryptonight/`](https://github.com/Cuprate/cuprate/tree/main/cryptonight) | CryptoNight hash functions
+| [`cuprate-pruning`](https://doc.cuprate.org/cuprate_pruning) | [`pruning/`](https://github.com/Cuprate/cuprate/tree/main/pruning) | Monero pruning logic/types
+| [`cuprate-helper`](https://doc.cuprate.org/cuprate_helper) | [`helper/`](https://github.com/Cuprate/cuprate/tree/main/helper) | Kitchen-sink helper crate for Cuprate
+| [`cuprate-test-utils`](https://doc.cuprate.org/cuprate_test_utils) | [`test-utils/`](https://github.com/Cuprate/cuprate/tree/main/test-utils) | Testing utilities for Cuprate
+| [`cuprate-types`](https://doc.cuprate.org/cuprate_types) | [`types/`](https://github.com/Cuprate/cuprate/tree/main/types) | Shared types across Cuprate
diff --git a/books/architecture/src/intro.md b/books/architecture/src/intro.md
deleted file mode 100644
index c708d61..0000000
--- a/books/architecture/src/intro.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# Systems
-Cuprate is made up of multiple distinct internal systems that work together.
-
-This section provides informal specifications and implementation details about each.
\ No newline at end of file