diff --git a/Gopkg.lock b/Gopkg.lock
index 2245ec99..c0cedd10 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -22,9 +22,12 @@
 [[projects]]
   name = "github.com/cosmos/cosmos-sdk"
   packages = [
+    "baseapp",
     "store",
     "types",
-    "wire"
+    "version",
+    "wire",
+    "x/auth"
   ]
   revision = "1a1373cc220e402397ad536aee6b8f5b068914c6"
   version = "v0.21.0"
@@ -138,6 +141,12 @@
   ]
   revision = "0fb14efe8c47ae851c0034ed7a448854d3d34cf3"
 
+[[projects]]
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
 [[projects]]
   branch = "master"
   name = "github.com/jmhodges/levigo"
@@ -162,6 +171,18 @@
   revision = "ca016a06a5753f8ba03029c0aa5e54afb1bf713f"
   version = "v1.4.0"
 
+[[projects]]
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
+  version = "v0.0.3"
+
+[[projects]]
+  name = "github.com/spf13/pflag"
+  packages = ["."]
+  revision = "583c0c0531f06d5278b7d917446061adc344b5cd"
+  version = "v1.0.1"
+
 [[projects]]
   branch = "master"
   name = "github.com/syndtr/goleveldb"
@@ -206,6 +227,7 @@
 [[projects]]
   name = "github.com/tendermint/tendermint"
   packages = [
+    "abci/server",
     "abci/types",
     "crypto",
     "crypto/merkle",
@@ -327,6 +349,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "df6cfdfe013b00b662a5b9ebd45319d0c114859e865b3034b0e984f15e698b45"
+  inputs-digest = "6c999da3cbcf5eac93468232147f2d8e372236a297ddd09275edb065f1bc23ae"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 0282dbf3..dfa46868 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -9,6 +9,10 @@
 [[constraint]]
   name = "github.com/hashicorp/golang-lru"
 
+[[constraint]]
+  name = "github.com/spf13/cobra"
+  version = "~0.0.1"
+
 [[override]]
   name = "google.golang.org/genproto"
   revision = "7fd901a49ba6a7f87732eb344f6e3c5b19d1b200"
diff --git a/Makefile b/Makefile
index fcc0cecf..f7f71338 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,24 @@
+# Copyright 2018 Tendermint. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 PACKAGES=$(shell go list ./... | grep -v '/vendor/')
 COMMIT_HASH := $(shell git rev-parse --short HEAD)
 BUILD_FLAGS = -tags netgo -ldflags "-X github.com/cosmos/ethermint/version.GitCommit=${COMMIT_HASH}"
 DOCKER_TAG = unstable
 DOCKER_IMAGE = tendermint/ethermint
+ETHERMINT_DAEMON_BINARY = emintd
+ETHERMINT_CLI_BINARY = emintcli
 
 DEP = github.com/golang/dep/cmd/dep
 GOLINT = github.com/tendermint/lint/golint
@@ -26,17 +42,22 @@ GOCYCLO_CHECK := $(shell command -v gocyclo 2> /dev/null)
 
 all: tools deps install
 
-ci: tools deps install
+#######################
+### Build / Install ###
+#######################
 
 build:
 ifeq ($(OS),Windows_NT)
-	go build $(BUILD_FLAGS) -o build/ethermint.exe ./*.go
+	go build $(BUILD_FLAGS) -o build/$(ETHERMINT_DAEMON_BINARY).exe ./cmd/ethermintd
+	go build $(BUILD_FLAGS) -o build/$(ETHERMINT_CLI_BINARY).exe ./cmd/ethermintcli
 else
-	go build $(BUILD_FLAGS) -o build/ethermint ./*.go
+	go build $(BUILD_FLAGS) -o build/$(ETHERMINT_DAEMON_BINARY) ./cmd/ethermintd/
+	go build $(BUILD_FLAGS) -o build/$(ETHERMINT_CLI_BINARY) ./cmd/ethermintcli/
 endif
 
 install:
-	go install $(BUILD_FLAGS) ./*.go
+	go install $(BUILD_FLAGS) ./cmd/ethermintd
+	go install $(BUILD_FLAGS) ./cmd/ethermintcli
 
 clean:
 	rm -rf ./build ./vendor
@@ -45,57 +66,61 @@ update-tools:
 	@echo "Updating golang dependencies"
 	go get -u -v $(DEP) $(GOLINT) $(GOMETALINTER) $(UNCONVERT) $(INEFFASSIGN) $(MISSPELL) $(ERRCHECK) $(UNPARAM) $(GOCYCLO)
 
+############################
+### Tools / Dependencies ###
+############################
+
 tools:
 ifdef DEP_CHECK
-	@echo "Dep is already installed.  Run 'make update-tools' to update."
+	@echo "Dep is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing dep"
 	go get -v $(DEP)
 endif
 ifdef GOLINT_CHECK
-	@echo "Golint is already installed.  Run 'make update-tools' to update."
+	@echo "Golint is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing golint"
 	go get -v $(GOLINT)
 endif
 ifdef GOMETALINTER_CHECK
-	@echo "Gometalinter.v2 is already installed.  Run 'make update-tools' to update."
+	@echo "Gometalinter.v2 is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing gometalinter.v2"
 	go get -v $(GOMETALINTER)
 endif
 ifdef UNCONVERT_CHECK
-	@echo "Unconvert is already installed.  Run 'make update-tools' to update."
+	@echo "Unconvert is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing unconvert"
 	go get -v $(UNCONVERT)
 endif
 ifdef INEFFASSIGN_CHECK
-	@echo "Ineffassign is already installed.  Run 'make update-tools' to update."
+	@echo "Ineffassign is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing ineffassign"
 	go get -v $(INEFFASSIGN)
 endif
 ifdef MISSPELL_CHECK
-	@echo "misspell is already installed.  Run 'make update-tools' to update."
+	@echo "misspell is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing misspell"
 	go get -v $(MISSPELL)
 endif
 ifdef ERRCHECK_CHECK
-	@echo "errcheck is already installed.  Run 'make update-tools' to update."
+	@echo "errcheck is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing errcheck"
 	go get -v $(ERRCHECK)
 endif
 ifdef UNPARAM_CHECK
-	@echo "unparam is already installed.  Run 'make update-tools' to update."
+	@echo "unparam is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing unparam"
 	go get -v $(UNPARAM)
 endif
 ifdef GOCYCLO_CHECK
-	@echo "goyclo is already installed.  Run 'make update-tools' to update."
+	@echo "goyclo is already installed. Run 'make update-tools' to update."
 else
 	@echo "Installing goyclo"
 	go get -v $(GOCYCLO)
@@ -106,6 +131,10 @@ deps:
 	@echo "--> Running dep ensure"
 	@dep ensure -v
 
+#######################
+### Testing / Misc. ###
+#######################
+
 godocs:
 	@echo "--> Wait a few seconds and visit http://localhost:6060/pkg/github.com/cosmos/ethermint"
 	godoc -http=:6060
@@ -115,4 +144,4 @@ docker:
 	docker tag ${DOCKER_IMAGE}:${DOCKER_TAG} ${DOCKER_IMAGE}:latest
 	docker tag ${DOCKER_IMAGE}:${DOCKER_TAG} ${DOCKER_IMAGE}:${COMMIT_HASH}
 
-.PHONY: build install update-tools tools deps godocs
+.PHONY: build install update-tools tools deps godocs clean
diff --git a/app/ethermint.go b/app/ethermint.go
new file mode 100644
index 00000000..ff68ac69
--- /dev/null
+++ b/app/ethermint.go
@@ -0,0 +1,45 @@
+package app
+
+import (
+	bam "github.com/cosmos/cosmos-sdk/baseapp"
+	"github.com/cosmos/cosmos-sdk/wire"
+)
+
+const (
+	appName = "Ethermint"
+)
+
+// EthermintApp implements an extended ABCI application.
+type EthermintApp struct {
+	*bam.BaseApp
+
+	codec  *wire.Codec
+	sealed bool
+
+	// TODO: stores and keys
+
+	// TODO: keepers
+
+	// TODO: mappers
+}
+
+// NewEthermintApp returns a reference to a new initialized Ethermint
+// application.
+func NewEthermintApp(opts ...func(*EthermintApp)) *EthermintApp {
+	app := &EthermintApp{}
+
+	// TODO: implement constructor
+
+	for _, opt := range opts {
+		opt(app)
+	}
+
+	app.seal()
+	return app
+}
+
+// seal seals the Ethermint application and prohibits any future modifications
+// that change critical components.
+func (app *EthermintApp) seal() {
+	app.sealed = true
+}
diff --git a/cmd/ethermintcli/main.go b/cmd/ethermintcli/main.go
new file mode 100644
index 00000000..e769e031
--- /dev/null
+++ b/cmd/ethermintcli/main.go
@@ -0,0 +1,7 @@
+package main
+
+func main() {
+	// TODO: Implement CLI commands and logic
+	//
+	// Ref: https://github.com/cosmos/ethermint/issues/432
+}
diff --git a/cmd/ethermintd/main.go b/cmd/ethermintd/main.go
new file mode 100644
index 00000000..33176840
--- /dev/null
+++ b/cmd/ethermintd/main.go
@@ -0,0 +1,7 @@
+package main
+
+func main() {
+	// TODO: Implement daemon command and logic
+	//
+	// Ref: https://github.com/cosmos/ethermint/issues/433
+}
diff --git a/server/start.go b/server/start.go
new file mode 100644
index 00000000..abb4e431
--- /dev/null
+++ b/server/start.go
@@ -0,0 +1 @@
+package server
diff --git a/types/context.go b/types/context.go
new file mode 100644
index 00000000..f9943fe4
--- /dev/null
+++ b/types/context.go
@@ -0,0 +1,8 @@
+package types
+
+// AppContext provides the ability for the application to pass around and
+// obtain immutable objects easily. More importantly, it allows for the
+// utilization of the object-capability model in which components gain access
+// to other components for which they truly need.
+type AppContext struct {
+}
diff --git a/version/version.go b/version/version.go
new file mode 100644
index 00000000..44d4e60f
--- /dev/null
+++ b/version/version.go
@@ -0,0 +1,10 @@
+package version
+
+// Version contains the application semantic version.
+//
+// TODO: How do we want to version this being that an initial Ethermint has
+// been developed?
+const Version = "0.0.0"
+
+// GitCommit contains the git SHA1 short hash set by build flags.
+var GitCommit = ""
diff --git a/x/.keep b/x/.keep
new file mode 100644
index 00000000..e69de29b