diff --git a/MultiMC.cpp b/MultiMC.cpp
index ae1401a6..9179f0e0 100644
--- a/MultiMC.cpp
+++ b/MultiMC.cpp
@@ -150,6 +150,7 @@ MultiMC::MultiMC(int &argc, char **argv) : QApplication(argc, argv)
 	// and accounts
 	m_accounts.reset(new MojangAccountList(this));
 	QLOG_INFO() << "Loading accounts...";
+	m_accounts->setListFilePath("accounts.json", true);
 	m_accounts->loadList();
 
 	// init the http meta cache
diff --git a/logic/auth/MojangAccount.cpp b/logic/auth/MojangAccount.cpp
index 936046fb..80b88082 100644
--- a/logic/auth/MojangAccount.cpp
+++ b/logic/auth/MojangAccount.cpp
@@ -19,6 +19,8 @@
 
 #include <QUuid>
 
+#include <logger/QsLog.h>
+
 MojangAccount::MojangAccount(const QString& username, QObject* parent) :
 	QObject(parent)
 {
@@ -113,6 +115,34 @@ void MojangAccount::loadProfiles(const ProfileList& profiles)
 		m_profiles.append(profile);
 }
 
+MojangAccountPtr MojangAccount::loadFromJson(const QJsonObject& object)
+{
+	// The JSON object must at least have a username for it to be valid.
+	if (!object.value("username").isString())
+	{
+		QLOG_ERROR() << "Can't load Mojang account info from JSON object. Username field is missing or of the wrong type.";
+		return nullptr;
+	}
+	
+	QString username = object.value("username").toString("");
+	QString clientToken = object.value("clientToken").toString("");
+	QString accessToken = object.value("accessToken").toString("");
+
+	// TODO: Load profiles?
+
+	return MojangAccountPtr(new MojangAccount(username, clientToken, accessToken));
+}
+
+QJsonObject MojangAccount::saveToJson()
+{
+	QJsonObject json;
+	json.insert("username", username());
+	json.insert("clientToken", clientToken());
+	json.insert("accessToken", accessToken());
+	// TODO: Save profiles?
+	return json;
+}
+
 
 AccountProfile::AccountProfile(const QString& id, const QString& name)
 {
diff --git a/logic/lists/MojangAccountList.cpp b/logic/lists/MojangAccountList.cpp
index 40f0ea26..68a4da18 100644
--- a/logic/lists/MojangAccountList.cpp
+++ b/logic/lists/MojangAccountList.cpp
@@ -27,8 +27,6 @@
 
 #include "logic/auth/MojangAccount.h"
 
-#define DEFAULT_ACCOUNT_LIST_FILE "accounts.json"
-
 #define ACCOUNT_LIST_FORMAT_VERSION 1
 
 MojangAccountList::MojangAccountList(QObject *parent) : QAbstractListModel(parent)
@@ -57,6 +55,7 @@ void MojangAccountList::addAccount(const MojangAccountPtr account)
 	beginResetModel();
 	m_accounts.append(account);
 	endResetModel();
+	onListChanged();
 }
 
 void MojangAccountList::removeAccount(const QString& username)
@@ -71,6 +70,16 @@ void MojangAccountList::removeAccount(const QString& username)
 		}
 	}
 	endResetModel();
+	onListChanged();
+}
+
+
+void MojangAccountList::onListChanged()
+{
+	if (m_autosave)
+		// TODO: Alert the user if this fails.
+		saveList();
+	emit listChanged();
 }
 
 
@@ -163,7 +172,12 @@ void MojangAccountList::updateListData(QList<MojangAccountPtr> versions)
 bool MojangAccountList::loadList(const QString& filePath)
 {
 	QString path = filePath;
-	if (path.isEmpty()) path = DEFAULT_ACCOUNT_LIST_FILE;
+	if (path.isEmpty()) path = m_listFilePath;
+	if (path.isEmpty())
+	{
+		QLOG_ERROR() << "Can't load Mojang account list. No file path given and no default set.";
+		return false;
+	}
 
 	QFile file(path);
 	
@@ -233,3 +247,64 @@ bool MojangAccountList::loadList(const QString& filePath)
 	return true;
 }
 
+bool MojangAccountList::saveList(const QString& filePath)
+{
+	QString path(filePath);
+	if (path.isEmpty()) path = m_listFilePath;
+	if (path.isEmpty())
+	{
+		QLOG_ERROR() << "Can't save Mojang account list. No file path given and no default set.";
+		return false;
+	}
+
+	QLOG_INFO() << "Writing account list to \"" << path << "\"...";
+
+	QLOG_DEBUG() << "Building JSON data structure.";
+	// Build the JSON document to write to the list file.
+	QJsonObject root;
+
+	root.insert("formatVersion", ACCOUNT_LIST_FORMAT_VERSION);
+
+	// Build a list of accounts.
+	QLOG_DEBUG() << "Building account array.";
+	QJsonArray accounts;
+	for (MojangAccountPtr account : m_accounts)
+	{
+		QJsonObject accountObj = account->saveToJson();
+		accounts.append(accountObj);
+	}
+
+	// Insert the account list into the root object.
+	root.insert("accounts", accounts);
+
+	// Create a JSON document object to convert our JSON to bytes.
+	QJsonDocument doc(root);
+
+
+	// Now that we're done building the JSON object, we can write it to the file.
+	QLOG_DEBUG() << "Writing account list to file.";
+	QFile file(path);
+
+	// Try to open the file and fail if we can't.
+	// TODO: We should probably report this error to the user.
+	if (!file.open(QIODevice::WriteOnly))
+	{
+		QLOG_ERROR() << "Failed to read the account list file (" << path << ").";
+		return false;
+	}
+
+	// Write the JSON to the file.
+	file.write(doc.toJson());
+	file.close();
+
+	QLOG_INFO() << "Saved account list to \"" << path << "\".";
+
+	return true;
+}
+
+void MojangAccountList::setListFilePath(QString path, bool autosave)
+{
+	m_listFilePath = path;
+	autosave = autosave;
+}
+
diff --git a/logic/lists/MojangAccountList.h b/logic/lists/MojangAccountList.h
index 37c928de..491abf6d 100644
--- a/logic/lists/MojangAccountList.h
+++ b/logic/lists/MojangAccountList.h
@@ -79,6 +79,15 @@ public:
 	 * one doesn't exist.
 	 */
 	virtual MojangAccountPtr findAccount(const QString &username);
+	
+	/*!
+	 * Sets the default path to save the list file to.
+	 * If autosave is true, this list will automatically save to the given path whenever it changes.
+	 * THIS FUNCTION DOES NOT LOAD THE LIST. If you set autosave, be sure to call loadList() immediately
+	 * after calling this function to ensure an autosaved change doesn't overwrite the list you intended
+	 * to load.
+	 */
+	virtual void setListFilePath(QString path, bool autosave=false);
 
 	/*!
 	 * \brief Loads the account list from the given file path.
@@ -102,8 +111,23 @@ signals:
 	void listChanged();
 
 protected:
+	/*!
+	 * Called whenever the list changes.
+	 * This emits the listChanged() signal and autosaves the list (if autosave is enabled).
+	 */
+	void onListChanged();
+
 	QList<MojangAccountPtr> m_accounts;
 
+	//! Path to the account list file. Empty string if there isn't one.
+	QString m_listFilePath;
+
+	/*!
+	 * If true, the account list will automatically save to the account list path when it changes.
+	 * Ignored if m_listFilePath is blank.
+	 */
+	bool m_autosave;
+
 protected
 slots:
 	/*!