diff --git a/Cargo.toml b/Cargo.toml
index 5c56390..985c84f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,16 +11,11 @@ edition = "2021"
 members = [
   "apub-awc",
   "apub-breaker-session",
-  "apub-deliver",
-  "apub-deref",
+  "apub-core",
   "apub-deref-client",
-  "apub-digest",
-  "apub-objectid",
   "apub-openssl",
   "apub-reqwest",
   "apub-rustcrypto",
-  "apub-session",
-  "apub-signer",
   "examples/awc-example",
   "examples/example-types",
   "examples/reqwest-example"
diff --git a/apub-awc/Cargo.toml b/apub-awc/Cargo.toml
index 7bbf68c..9ca5e01 100644
--- a/apub-awc/Cargo.toml
+++ b/apub-awc/Cargo.toml
@@ -7,11 +7,7 @@ edition = "2021"
 
 [dependencies]
 actix-http = { version = "3.0.0-beta.12", default-features = false }
-apub-deliver = { version = "0.1.0", path = "../apub-deliver/" }
-apub-digest = { version = "0.1.0", path = "../apub-digest/" }
-apub-deref = { version = "0.1.0", path = "../apub-deref/" }
-apub-session = { version = "0.1.0", path = "../apub-session/" }
-apub-signer = { version = "0.1.0", path = "../apub-signer/" }
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 awc = { version = "3.0.0-beta.10", default-features = false }
 http-signature-normalization-actix = { version = "0.5.0-beta.12", default-features = false, features = ["client", "digest"] }
 serde = "1"
diff --git a/apub-awc/src/lib.rs b/apub-awc/src/lib.rs
index b0386a8..190834a 100644
--- a/apub-awc/src/lib.rs
+++ b/apub-awc/src/lib.rs
@@ -1,8 +1,10 @@
 use actix_http::error::BlockingError;
-use apub_deref::{Dereference, Repo};
-use apub_digest::{Digest, DigestFactory};
-use apub_session::Session;
-use apub_signer::{Sign, SignFactory};
+use apub_core::{
+    deref::{Dereference, Repo},
+    digest::{Digest, DigestFactory},
+    session::Session,
+    signature::{Sign, SignFactory},
+};
 use awc::{http::header::HttpDate, Client};
 use http_signature_normalization_actix::{
     digest::DigestName,
@@ -189,7 +191,7 @@ where
     }
 }
 
-impl<'a, CurrentSession, Crypto> apub_deliver::Client<'a> for AwcClient<'a, CurrentSession, Crypto>
+impl<'a, CurrentSession, Crypto> apub_core::deliver::Client<'a> for AwcClient<'a, CurrentSession, Crypto>
 where
     CurrentSession: Session,
     Crypto: DigestFactory + SignFactory + 'static,
diff --git a/apub-breaker-session/Cargo.toml b/apub-breaker-session/Cargo.toml
index ebbc926..24fca0d 100644
--- a/apub-breaker-session/Cargo.toml
+++ b/apub-breaker-session/Cargo.toml
@@ -6,6 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-apub-session = { version = "0.1.0", path = "../apub-session/" }
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 dashmap = "4.0.2"
 url = "2"
diff --git a/apub-breaker-session/src/lib.rs b/apub-breaker-session/src/lib.rs
index ee374fb..af7dabd 100644
--- a/apub-breaker-session/src/lib.rs
+++ b/apub-breaker-session/src/lib.rs
@@ -1,4 +1,4 @@
-use apub_session::Session;
+use apub_core::session::Session;
 use dashmap::DashMap;
 use std::{
     sync::Arc,
diff --git a/apub-deref/Cargo.toml b/apub-core/Cargo.toml
similarity index 90%
rename from apub-deref/Cargo.toml
rename to apub-core/Cargo.toml
index 3297ced..032dfb3 100644
--- a/apub-deref/Cargo.toml
+++ b/apub-core/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "apub-deref"
+name = "apub-core"
 version = "0.1.0"
 edition = "2021"
 
diff --git a/apub-deliver/src/lib.rs b/apub-core/src/deliver.rs
similarity index 100%
rename from apub-deliver/src/lib.rs
rename to apub-core/src/deliver.rs
diff --git a/apub-deref/src/lib.rs b/apub-core/src/deref.rs
similarity index 100%
rename from apub-deref/src/lib.rs
rename to apub-core/src/deref.rs
diff --git a/apub-digest/src/lib.rs b/apub-core/src/digest.rs
similarity index 100%
rename from apub-digest/src/lib.rs
rename to apub-core/src/digest.rs
diff --git a/apub-core/src/lib.rs b/apub-core/src/lib.rs
new file mode 100644
index 0000000..d5818f4
--- /dev/null
+++ b/apub-core/src/lib.rs
@@ -0,0 +1,6 @@
+pub mod deliver;
+pub mod deref;
+pub mod digest;
+pub mod object_id;
+pub mod session;
+pub mod signature;
diff --git a/apub-objectid/src/lib.rs b/apub-core/src/object_id.rs
similarity index 100%
rename from apub-objectid/src/lib.rs
rename to apub-core/src/object_id.rs
diff --git a/apub-session/src/lib.rs b/apub-core/src/session.rs
similarity index 100%
rename from apub-session/src/lib.rs
rename to apub-core/src/session.rs
diff --git a/apub-signer/src/lib.rs b/apub-core/src/signature.rs
similarity index 100%
rename from apub-signer/src/lib.rs
rename to apub-core/src/signature.rs
diff --git a/apub-deliver/Cargo.toml b/apub-deliver/Cargo.toml
deleted file mode 100644
index 9b167e5..0000000
--- a/apub-deliver/Cargo.toml
+++ /dev/null
@@ -1,10 +0,0 @@
-[package]
-name = "apub-deliver"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-serde = "1"
-url = "2"
diff --git a/apub-deref-client/Cargo.toml b/apub-deref-client/Cargo.toml
index ad72f88..91ed26d 100644
--- a/apub-deref-client/Cargo.toml
+++ b/apub-deref-client/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-apub-deref = { version = "0.1.0", path = "../apub-deref/" }
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 pin-project-lite = "0.2.7"
 thiserror = "1"
 url = "2"
diff --git a/apub-deref-client/src/lib.rs b/apub-deref-client/src/lib.rs
index 7c26079..ff92800 100644
--- a/apub-deref-client/src/lib.rs
+++ b/apub-deref-client/src/lib.rs
@@ -1,4 +1,4 @@
-use apub_deref::{Dereference, Repo};
+use apub_core::deref::{Dereference, Repo};
 use std::{
     future::Future,
     pin::Pin,
diff --git a/apub-deref/.gitignore b/apub-deref/.gitignore
deleted file mode 100644
index 96ef6c0..0000000
--- a/apub-deref/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-/target
-Cargo.lock
diff --git a/apub-digest/Cargo.toml b/apub-digest/Cargo.toml
deleted file mode 100644
index 7168aa7..0000000
--- a/apub-digest/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "apub-digest"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/apub-objectid/Cargo.toml b/apub-objectid/Cargo.toml
deleted file mode 100644
index 3d0350b..0000000
--- a/apub-objectid/Cargo.toml
+++ /dev/null
@@ -1,10 +0,0 @@
-[package]
-name = "apub-objectid"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-serde = "1"
-url = { version = "2", features = ["serde"] }
diff --git a/apub-openssl/Cargo.toml b/apub-openssl/Cargo.toml
index 5dcb1e6..75061ab 100644
--- a/apub-openssl/Cargo.toml
+++ b/apub-openssl/Cargo.toml
@@ -6,6 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-apub-digest = { version = "0.1.0", path = "../apub-digest/" }
-apub-signer = { version = "0.1.0", path = "../apub-signer/" }
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 openssl = "0.10.36"
diff --git a/apub-openssl/src/lib.rs b/apub-openssl/src/lib.rs
index cd85946..bf9af02 100644
--- a/apub-openssl/src/lib.rs
+++ b/apub-openssl/src/lib.rs
@@ -30,7 +30,7 @@ impl OpenSsl {
     }
 }
 
-impl<'a> apub_digest::Digest for OpenSslDigest {
+impl<'a> apub_core::digest::Digest for OpenSslDigest {
     const NAME: &'static str = "SHA-256";
 
     fn digest(mut self, input: &[u8]) -> String {
@@ -41,7 +41,7 @@ impl<'a> apub_digest::Digest for OpenSslDigest {
     }
 }
 
-impl apub_signer::Sign for OpenSslSigner {
+impl apub_core::signature::Sign for OpenSslSigner {
     type Error = ErrorStack;
 
     fn sign(&self, signing_string: &str) -> Result<String, Self::Error> {
@@ -52,7 +52,7 @@ impl apub_signer::Sign for OpenSslSigner {
     }
 }
 
-impl apub_digest::DigestFactory for OpenSsl {
+impl apub_core::digest::DigestFactory for OpenSsl {
     type Digest = OpenSslDigest;
 
     fn digest(&self) -> Self::Digest {
@@ -62,7 +62,7 @@ impl apub_digest::DigestFactory for OpenSsl {
     }
 }
 
-impl apub_signer::SignFactory for OpenSsl {
+impl apub_core::signature::SignFactory for OpenSsl {
     type Signer = OpenSslSigner;
     type KeyId = String;
 
diff --git a/apub-reqwest/Cargo.toml b/apub-reqwest/Cargo.toml
index 4f33a5d..9143678 100644
--- a/apub-reqwest/Cargo.toml
+++ b/apub-reqwest/Cargo.toml
@@ -6,11 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-apub-deliver = { version = "0.1.0", path = "../apub-deliver/" }
-apub-deref = { version = "0.1.0", path = "../apub-deref/" }
-apub-digest = { version = "0.1.0", path = "../apub-digest/" }
-apub-session = { version = "0.1.0", path = "../apub-session/" }
-apub-signer = { version = "0.1.0", path = "../apub-signer/" }
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 http-signature-normalization-reqwest = { version = "0.2.0", default-features = false, features = ["digest"] }
 httpdate = "1.0.2"
 reqwest = { version = "0.11.6", default-features = false, features = ["json"] }
diff --git a/apub-reqwest/src/lib.rs b/apub-reqwest/src/lib.rs
index b5022b6..3a57cf6 100644
--- a/apub-reqwest/src/lib.rs
+++ b/apub-reqwest/src/lib.rs
@@ -1,7 +1,9 @@
-use apub_deref::{Dereference, Repo};
-use apub_digest::{Digest, DigestFactory};
-use apub_session::Session;
-use apub_signer::{Sign, SignFactory};
+use apub_core::{
+    deref::{Dereference, Repo},
+    digest::{Digest, DigestFactory},
+    session::Session,
+    signature::{Sign, SignFactory},
+};
 use http_signature_normalization_reqwest::{
     digest::{DigestCreate, SignExt},
     prelude::{Config, Sign as _, SignError},
@@ -182,7 +184,7 @@ where
     }
 }
 
-impl<'a, CurrentSession, Crypto> apub_deliver::Client<'a>
+impl<'a, CurrentSession, Crypto> apub_core::deliver::Client<'a>
     for ReqwestClient<'a, CurrentSession, Crypto>
 where
     CurrentSession: Session + Send + Sync,
diff --git a/apub-rustcrypto/Cargo.toml b/apub-rustcrypto/Cargo.toml
index 5dffbd6..c914c04 100644
--- a/apub-rustcrypto/Cargo.toml
+++ b/apub-rustcrypto/Cargo.toml
@@ -6,8 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+apub-core = { version = "0.1.0", path = "../apub-core/" }
 base64 = "0.13.0"
 rsa = "0.5.0"
 sha2 = "0.9.0"
-apub-digest = { version = "0.1.0", path = "../apub-digest/" }
-apub-signer = { version = "0.1.0", path = "../apub-signer" }
diff --git a/apub-rustcrypto/src/lib.rs b/apub-rustcrypto/src/lib.rs
index d767e7e..33e7378 100644
--- a/apub-rustcrypto/src/lib.rs
+++ b/apub-rustcrypto/src/lib.rs
@@ -25,7 +25,7 @@ impl Rustcrypto {
     }
 }
 
-impl apub_digest::Digest for Sha256Digest {
+impl apub_core::digest::Digest for Sha256Digest {
     const NAME: &'static str = "SHA-256";
 
     fn digest(mut self, input: &[u8]) -> String {
@@ -36,7 +36,7 @@ impl apub_digest::Digest for Sha256Digest {
     }
 }
 
-impl apub_signer::Sign for RsaSigner {
+impl apub_core::signature::Sign for RsaSigner {
     type Error = rsa::errors::Error;
 
     fn sign(&self, signing_string: &str) -> Result<String, Self::Error> {
@@ -51,7 +51,7 @@ impl apub_signer::Sign for RsaSigner {
     }
 }
 
-impl apub_digest::DigestFactory for Rustcrypto {
+impl apub_core::digest::DigestFactory for Rustcrypto {
     type Digest = Sha256Digest;
 
     fn digest(&self) -> Self::Digest {
@@ -61,7 +61,7 @@ impl apub_digest::DigestFactory for Rustcrypto {
     }
 }
 
-impl apub_signer::SignFactory for Rustcrypto {
+impl apub_core::signature::SignFactory for Rustcrypto {
     type Signer = RsaSigner;
     type KeyId = String;
 
diff --git a/apub-session/Cargo.toml b/apub-session/Cargo.toml
deleted file mode 100644
index 6fbe33c..0000000
--- a/apub-session/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[package]
-name = "apub-session"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-url = "2"
diff --git a/apub-signer/Cargo.toml b/apub-signer/Cargo.toml
deleted file mode 100644
index 1b034b2..0000000
--- a/apub-signer/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "apub-signer"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/examples/awc-example/Cargo.toml b/examples/awc-example/Cargo.toml
index 971e338..b044430 100644
--- a/examples/awc-example/Cargo.toml
+++ b/examples/awc-example/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 actix-rt = "2.4.0"
 apub-awc = { version = "0.1.0", path = "../../apub-awc/" }
 apub-breaker-session = { version = "0.1.0", path = "../../apub-breaker-session/" }
-apub-session = { version = "0.1.0", path = "../../apub-session/" }
+apub-core = { version = "0.1.0", path = "../../apub-core/" }
 apub-rustcrypto = { version = "0.1.0", path = "../../apub-rustcrypto/" }
 awc = { version = "3.0.0-beta.10", default-features = false, features = ["rustls"] }
 example-types = { version = "0.1.0", path = "../example-types/" }
diff --git a/examples/awc-example/src/main.rs b/examples/awc-example/src/main.rs
index e45f562..e6ec70e 100644
--- a/examples/awc-example/src/main.rs
+++ b/examples/awc-example/src/main.rs
@@ -1,7 +1,7 @@
 use apub_awc::AwcClient;
 use apub_breaker_session::BreakerSession;
 use apub_rustcrypto::Rustcrypto;
-use apub_session::RequestCountSession;
+use apub_core::session::RequestCountSession;
 use example_types::{object_id, NoteType, ObjectId};
 use http_signature_normalization_actix::Config;
 use rsa::RsaPrivateKey;
diff --git a/examples/example-types/Cargo.toml b/examples/example-types/Cargo.toml
index 4a164e6..b5acb4a 100644
--- a/examples/example-types/Cargo.toml
+++ b/examples/example-types/Cargo.toml
@@ -6,8 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-apub-deliver = { version = "0.1.0", path = "../../apub-deliver/" }
-apub-deref = { version = "0.1.0", path = "../../apub-deref/" }
-apub-objectid = { version = "0.1.0", path = "../../apub-objectid/" }
+apub-core = { version = "0.1.0", path = "../../apub-core/" }
 serde = { version = "1", features = ["derive"] }
 url = { version = "2", features = ["serde"] }
diff --git a/examples/example-types/src/lib.rs b/examples/example-types/src/lib.rs
index 174c788..ea407af 100644
--- a/examples/example-types/src/lib.rs
+++ b/examples/example-types/src/lib.rs
@@ -1,5 +1,7 @@
-use apub_deliver::Client;
-use apub_deref::{Dereference, Repo};
+use apub_core::{
+    deliver::Client,
+    deref::{Dereference, Repo},
+};
 use std::{
     fmt::Display,
     ops::{Deref, DerefMut},
@@ -8,13 +10,13 @@ use url::Url;
 
 #[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
 #[serde(transparent)]
-pub struct ObjectId<Kind>(apub_objectid::ObjectId<Kind>);
+pub struct ObjectId<Kind>(apub_core::object_id::ObjectId<Kind>);
 
 pub fn object_id<Kind>(id: Url) -> ObjectId<Kind>
 where
     ObjectId<Kind>: Dereference,
 {
-    ObjectId(apub_objectid::ObjectId::new(id))
+    ObjectId(apub_core::object_id::ObjectId::new(id))
 }
 
 #[derive(Debug, serde::Deserialize, serde::Serialize)]
diff --git a/examples/reqwest-example/Cargo.toml b/examples/reqwest-example/Cargo.toml
index 0ac207a..64b5833 100644
--- a/examples/reqwest-example/Cargo.toml
+++ b/examples/reqwest-example/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 apub-breaker-session = { version = "0.1.0", path = "../../apub-breaker-session/" }
-apub-session = { version = "0.1.0", path = "../../apub-session/" }
+apub-core = { version = "0.1.0", path = "../../apub-core/" }
 apub-reqwest = { version = "0.1.0", path = "../../apub-reqwest/" }
 apub-openssl = { version = "0.1.0", path = "../../apub-openssl/" }
 example-types = { version = "0.1.0", path = "../example-types/" }
diff --git a/examples/reqwest-example/src/main.rs b/examples/reqwest-example/src/main.rs
index 003acc9..cad284c 100644
--- a/examples/reqwest-example/src/main.rs
+++ b/examples/reqwest-example/src/main.rs
@@ -1,7 +1,7 @@
 use apub_breaker_session::BreakerSession;
+use apub_core::session::RequestCountSession;
 use apub_openssl::OpenSsl;
 use apub_reqwest::ReqwestClient;
-use apub_session::RequestCountSession;
 use example_types::{object_id, NoteType, ObjectId};
 use http_signature_normalization_reqwest::Config;
 use openssl::{pkey::PKey, rsa::Rsa};